AloE

I also encountered the reflection errors & buttons not responding: I installed today via RSS CKAN which pulls from the RO github repository version, currently at 1.10.1: https://github.com/KSP-RO/RSSTimeFormatter Since I am unclear where discussion helps the most, I have opened KSP-RO/RSSTimeFormatter Issue #17

@Mythos me as well !! just used your great tool to remove some KerbalEDU specific parts from some vessels in a KerbalEDU 1.4.5 save & loaded it in regular KSP 1.12.2 Thanks!

I would be grateful to know which version of KSP & Principia you were using when you experienced this, for example, by any chance the new Grossmann? The tests take quite a bit of time so I have only used Gröbner so far in KSP 1.11.2. Also, per discussion over at Discord, issue #3064 has been opened to help track this symptom cluster...much more detail is over there. Hopefully after having time to review the current data, @pleroy will advise us with what further data may be useful.

@linuxgurugamer fyi...CKAN is pulling 0.5.0.8 from SpaceDock which is the version that does not work with Principia, rather than the latest version on GitHub = 0.5.0.7 which we discussed & verified earlier in this thread that does work fine with Principia. Would be great to have CKAN manage the 0.5.0.7 version. Thanks.

@theleg fyi...in case of interest to you, I've added a Principia, RSS, Real Scale Boosters save in the post linked to via the image below (see the save "Flight Plan to make the "Moon Square" link under objective 4 ) that also serves as a decent practice for a launch into a Lunar plane since there is a vessel already in the plane in LEO...you can also use the save to visualize the planes in the different frames...e.g. this save was made simply by 'eyeball' in map view using a 1 day history length in ECI & time warping until the circular Moon path was over our launch latitude...then I just picked a time (of night in this case) where an East launch lines up with the lunar plane lines which are visible if you increase history length say to 30 days & scroll out far enough in map view...also the flight plan for the transfer to the "Square(-ish) Retrograde Moon" orbit is visible in the save if you switch to the vessel which is already in orbit... @scimas & @hypervelocity, you might also find these saves interesting to drop into one of your KSP 1.11.2 Principia RSS folders for tinkering. Also, posting of additional interesting saves over on that thread is very much welcome. Image below links to the full thread...Enjoy!

Exploring Lagrange Points & Rectilinear orbits...Let's start with the Moon Retrograde Square Orbit Why explore this intriguing region of space in KSP with Principia & RSS? The upcoming ESA/NASA/JAXA Lunar Gateway DSL station & SLS Artemis III+ missions & the 'mind puzzle' of navigating the 'shape' of forces in this region of space. One simple way to start exploring the 'shape' of force potentials around the Moon gravity well in the Earth-Moon system is the DRO 'Lunar Retrograde Square': an orbit from near L2 towards L5, back near L1 then towards L4, & falling back towards L2... Update: Principia added an EML reference frame -- with the option to show equipotential lines for the sum of forces associated with gravity & rotation in the plane defined by the orbital of the Moon around Earth... These equipotential lines are shown for a single plane & for the 'current time' & do shift slightly with the Moon's distance from Earth i.e. the location of the equipotential lines will be slightly different when a craft actually reaches a given point on the Principia projected fuchsia or dashed paths... the shift is quite noticeable over time along the direction of an imaginary line say from L4 to L5. a visual explanation of equipotential in a video by Scott Manley The EML frame offers an insightful way to visualize the dynamics shaping the Lunar Retrograde Square Orbit... For example, for the 'square' orbit plotted in the MCI frame... see how a lower AP creates a more rounded 'corner' (e.g. see the AP on the L4 side of the orbit in the screenshots below); where as, traveling further towards L4 or L5 creates a sharper 'corner' (e.g. see the AP on the L5 side of the orbit in the screenshots below)... well, that is at least until you get close to a transfer to L4 or L5 where you will see a loop 'ear' corner instead. Note: To help interpret the craft path, I have added to the screenshots in yellow text approximate L point information...this is _not_ shown in game. The above animation shows the 'Square' orbit over 7 years in MCI (Moon Centered Inertial) frame (fyi...with the small vessel in this save the 'square' path persisted for about 18 years with no station keeping). Clarification: the Earth is traveling along the blue-ish arc counter-clockwise. Summary of Earth-Moon system Challenges: Challenge #1 (Beginner): "Get a feel for the dynamics that shape the 'Retro Square' orbit: Make a 'Moon Pentagon' orbit" Challenge #2 (Intermediate): 'Transfer to an Artemis III & Gateway Station type of Moon NRHO [pdf] (see animation & NASA graphic below)" Challenge #3 (Intermediate): 'Transfers along the 'Lunar Retro Square' to halo orbits around L2, L1, L4, L5' Challenge #4 (Advanced): "Moon L1 halo to Moon L2 halo transfer similar to the 2010 ARTEMIS-P1 mission (see NASA drawing below)" Challenge #5 (Advanced): "Create a 'Lunar Gateway (images post by NASA of the planned station) ' type station (module link sequence video NASA) (or a magic potatoroid mining station [Matt Lowne] ) in a long term 'Lunar Retro Square Orbit' (since a Moon NRHO might require more frequent station keeping) for ease of docked ship transfers to Moon NRHO, L2, L1, L4, L5" Challenge #6: Create an even better n-body related challenge & share it! Challenge #1: "Get a feel for the dynamics that shape the 'Retro Square' orbit: Make a 'Moon Pentagon' orbit" In the provided save, with a single less than 10s burn, turn the Retrograde "Moon Square" orbit into a "Moon Pentagon" orbit: Inspired by the @maccollo "Principia Mun Retrograde Square Orbit" during the afternoon of an 'at home from school not so well day', my son & I decided to see if a related "Square Retrograde Moon" orbit could be created in Principia RSS. Indeed, we found something similar that we could also manipulate purposefully with a single small burn at a specific time: In this 1st case, turn the "Moon Square" orbit into a "Moon Pentagon" orbit as shown in the images with a single less than 10s burn like we did (yes, that's a hint, & improvements welcome). We share this as an introduction of a thread to explore, discuss & share refined versions of this orbit as well as new saves of other intriguing orbits with the 'flight plan' of burns to reach them... Discovery either by blind fortune dragging Principia maneuver burn sliders or intricate use of KSPTOT 1.6.9 welcome! KSP version: 1.12.x Required Mods: Principia, RSS Optional Mods: RealScaleBoosters, SMURRF, KOS To load: download the "Moon Square Orbit" save create a KSP 1.12.x GameData with Principia, RSS load KSP & create a new save game, find the folder with the name you gave to that newly created save game on your hard drive & copy into that folder the "MoonSquare.sfs" Load the MoonSquare save as normal from the usual in game menu (e.g. from the Space Center screen) Find the craft in the Tracking Station & select it to fly. if you are unfamiliar with Principia here is a link to a post with some visuals & suggestions. Metrics: Orbit Uniformity & Stability (both improved revisions as well as your own original orbits welcome) Quality & Ease of the flight plan (the easier/simpler to execute the better) in the save you share discovery of a simple regular maintenance maneuver(s) would be a nice plus most importantly -- the fun factor: how much fun we all have exploring what you improve/create! Objectives: 1) Fun (with Principia RSS ;-) 2) hands on play with fascinating orbits, one barely new existed, with saves someone else took the effort to make 3) improve a save: create & share Principia 'flight plans' of maintenance burn(s) that make a given orbit more uniform & stable 4) make a new save (with a simplified mod list): and share your own flight plan for some type of cool orbit... Flight Plan to make the "Moon Square": requires RealScaleBoosters added to GameData in addition to Principia & RSS Related to Challenge #1: The recent SLS Artemis 1 mission made use of a Lunar distant retrograde orbit (DRO) [source link for animation below] (not square though ;-) The Principia EML frame is similar to the left 'Earth-Moon Pulsating Rotating Frame': Challenge #2 (Intermediate): Transfer to a SLS Artemis III & Gateway Station Moon NRHO: NASA explains why a NRHO vs DRO or low lunar orbit for Gateway station: https://www.planetary.org/space-images/near-rectilinear-halo-orbits Challenge #3 (Intermediate): 'Transfers along the 'Lunar Retro Square' to halo orbits around L2, L1, L4, L5' Challenge #4 (Advanced): "Moon L1 halo to Moon L2 halo transfer similar to the 2010 ARTEMIS-P1 mission" 2010 "ARTEMIS-P1 - The First Earth-Moon Libration Orbiter": Additional videos: NASA Scientific Visualization Studio 2010 ARTEMIS at Lagrange: "In this version, the satellite trails are are constructed in a lunar-centric inertial coordinate system so the trails reveal the motion of the satellites relative to the Lagrange points in INERTIAL space (fixed with the distant stars)" Some examples of additional orbits to explore: Near Rectilinear Halo Orbit (NRHO) "KSPTOT LVD: (Tools -> Halo Orbit Constructor menu)" Arrowstar's post with details about this new tool (link) Lissajous orbit WMAP at Sun–Earth L2,[7] Earth-Moon L points Visual Data Mission ideas: place a station, gravitational wave 'telescope' (link), or comsat(s) at the stable Earth-Moon L4 & L5 Note: L3 is an unstable L point = requires small periodic maintenance burns. Images: source source source

I've not seen the issue before Gröbner, is that the version of Principia you are using?...what I saw occurred in one of my minimally modded KSP GameData folders...only Principia, FARc, Craft Manager...are you using either FARc or Craft manager? If not, then we might coincidentally have a similar hardware/driver related issue (my installs run on windows 10 with nvidia cards) or the newest Principia might actually be having/revealing some type of interaction...I'll be curious if the symptom ends up showing up in some way on a regular/predictable basis. example of odd nav ball perimeter (along with flickers symptom)

I saw something similar the other day,,,after at least the same amount of time...I think with KSP 1.11.2...we first noticed a 'funny' navball area (sort of like the 'Cheshire Cat' with disappearing parts...lol) and various flickering that progressively gets worse...but I have no idea of the origin of the flicker at this point so only made a note to look out for it again...did something suggest to you that it is related to Principia?

yes...how you guys keep up with & manage all the details amazes me... & an update for my prior post, apparently I did not notice the engine model changes apparently from the era of1.6, oh dear...lol...despite editing it in 1.11.2 before making the save I just shared in my recent post...appears that 1.11.2 still supported a deprecated model version (heck...I liked the version with the glittery gold insulation) that is no longer found in 1.12!...arghhh...I just revised the craft & updated it in the folder as Principia2MunV5.craft. I will also need to eventually remake the save again for it to also look proper in 1.12.x...oh well, now at least KSP 1.12.x is the 'final' major KSP version. So, apparently, a 1.12.x word of caution to anyone else who liked the glittery gold terrier in their older crafts... interesting that time warp hides the gap... old craft rebuilt in KSP 1.11.2, looks like somehow I still applied a deprecated version of the LV-909 "Terrier" Engine model that no longer appears in KSP 1.12

For the present KerbalEDU 1.4.5 using Principia Fatou, (or regular KSP 1.11.2 using Principia Green) the "square orbit" save provided at the older KSP post above is fun to explore (one can also think of it as a special elliptical orbit around the Kerbin that results in a "square" retrograde path around Mun...really...fly it & enjoy the KSP tourism experience). Also, I've provided a KSP 1.11.2 Principia & FARc save to help people new to Principia explore eggrobin's tutorial mentioned earlier in this topic thread...my prior saves had a ship that only loaded in KerbalEDU...I revised the ship to work fine in KSP. For now the save only works in KSP 1.11.2 until Principia & FARc update to 1.12.x . (I also made this new save in part since KSP 1.12 is stated to be the last major update to KSP & with the hope that Squad/TT eventually makes a final update of KerbalEDU to 1.12.x... since the 'final original' KSP & the huge mod & tool contributions for it built by the community is more perfect than ever for education...) https://drive.google.com/drive/folders/1iByh94S72yX3Ynxo1WapKtI_YZSdhUCI?usp=sharing I've also written some further suggestions for people new to Principia to help with 'learning by exploring, studying numbers in pictures, & just plain clicking & sliding the Principia buttons & sliders on your own' at the following post on the Principia thread: https://forum.kerbalspaceprogram.com/index.php?/topic/162200-wip181-191-1101-and-1110–2-principia—version-gröbner-released-2021-06-10—n-body-and-extended-body-gravitation/&do=findComment&comment=3995239 As mentioned in the post at the above link, making & using 'new bodies files' with KSP Trajectory Optimization Tool built with MATLAB & its KSP plugin is quite helpful with Principia especially with the pre-release version 1.6.8 (read especially KSPTOT pages 179 & 178 for key details on the pre-release version):

Since you already did a Mun flyby, this post has some additional things with which to experiment & also serves as a few suggestions for anyone else new to Principia... I find it helpful to use pre-created saves & click all the buttons & sliders in various combinations & see what they actually do (and how they affect performance on a given machine). Here are links to two pre-created saves: 1) The first save has a pre-created flight plan with ~18 minutes until ignition that helps with tinkering with the various transfers in @eggrobin's tutorial at the following link. I find it to be a good way to get familiar with the dynamics of how the Principia maneuver sliders, plan length slider, & various 'steps' settings change the trajectory plot in the various reference frames: eggrobin's tutorial: https://github.com/mockingbirdnest/Principia/wiki/A-guide-to-going-to-the-Mun-with-Principia Here is a link to a folder with a KSP 1.11.2 save made with just Principia Gröbner & FARc. The save starts in 80k circular equatorial Kerbin orbit. I also included in the folder the full FARc craft in case anyone ever wants to launch to the parking orbit. I use it for practice myself, as well as with others. Practice using RCS translation to adjust the flight path as well as try out Principia time warp physics & spin stabilization along the way. 2) The second is an interesting save posted by @maccollo & is a bit old...I loaded it in KSP 1.11.2 with Principia Green but get a crash when trying to load it with Gröbner. The save is found at the following thread...yes the ship really does "see" the Mun from a square like path around it...worth loading & flying it just for the view: Also, While learning & especially if using older CPUs like I do...it helps to fly one vessel at a time & remove the *potatoroid* folder found at \GameData\Squad\Parts\Misc\PotatoRoid since asteroids are "vessels". The Principia orbit analyzer can be useful to help you adjust the orbital plane of a parking orbit (link to an archived concise description of which Keplerian elements define the plane), for example, a Minmus or a Jool transfer: KSP Trajectory Optimization Tool : use its "Create New Bodies File From KSP" while your Principia save is loaded in KSP with the KSPTOT plugin then load that bodies.ini into KSPTOT for your 'near future' analysis. Also, load the resulting 'bodies file' in a text editor to see the orbital elements (especially the inclination & Longitude of ascending node (raan)) for each of the celestials which can help with 'close enough' plane alignment like mentioned above (for more complex investigations make sure to use the KSPTOT pre-release 1.6.8.x & read especially KSPTOT pages 179 & 178 for key details): Example Duna & Minmus Transfers: see dates & dV as example ballpark starting points for practicing & experimenting with approximations of such transfers...

no (in game) KSP crashes for two weeks ;-) @pleroy thank you very much for implementing a way ( #2922 ) to ignore those trouble causing debris 'vessels'. Thank you both for all the improvements especially the past year. And to clarify, is it expected that all the enhancements up through Principia Gröbner will apply to any 'older' save created post "del Ferro" (which is the last time I recall it being mentioned that a new save was needed) the same as if I recreated what I was working on in the 'older' save(s) in a new Gröbner save?

That indeed sounds like it matches well the "looks like KSP in purgatory"...lol...symptom I am seeing...& from what you wrote it sounds like from the user side there is not much I could do on heavily modded installs to mitigate the chance of that 'catch 22' occurring?

for anyone else who encounters this, I'm going to emphasize the above possibility since I have a 1.10.1 install that loads just fine 1/2 of the time & but has this hang on "Running Post Patch Callbacks" during the other half of loads with 'no changes'...so far rebooting the offending machine & deleting the MM cache in GameData folder seems to help in my case...(my gut feel observation on this machine is that it is related to memory instability/corruption induced by an occasional driver or AV conflict since, despite my maintenance efforts, I still occasionally see an IRQL or related BSOD on occasion...)

@scimas created a very useful set of Principia initial states for use with Real Solar System (RSS). To make it easier to find, below is the link to the relevant post in the Principia thread that has the link to the actual files & why they help make Principia more manageable: https://forum.kerbalspaceprogram.com/index.php?/topic/162200-wip181-191-1101-and-1110%E2%80%932-principia%E2%80%94version-green-released-2021-05-11%E2%80%94n-body-and-extended-body-gravitation/&do=findComment&comment=3883817 Basically, if you want to recreate past real missions, try your hand at real near future missions, or do planetary astronomy in KSP or KerbalEDU, etc. you will want to delete the GameData\Principia\real_solar_system\initial_state_jd_2433282_500000000.cfg and replace it with one of scimas' Principia "initial state" files that has an epoch just before your launch date, astronomical event, etc. Further details regarding the purpose of the Principia "initial state" file may be found at this link: https://github.com/mockingbirdnest/Principia/wiki/Principia-configuration-files#the-principia_initial_state-configuration These files will also work with Fatou which was the last Principia version to support KSP/KerbalEDU 1.4.5. KerbalEDU 1.4.5 was the final version released & also was the last KSP version to support x32 operating systems. Sadly, TG development & sales of KerbalEDU shutdown in May 2021. At least today, I was able to login to TGdesk & KerbalEDU. I really hope TG shares their work with the KSP community & Squad/TT so that their excellent flight recorder, formula tool, & force arrows mods continue and that some TGdesk login like form of EDU licensing may continue in the KSP community.

I would be grateful to know whether or not you also use Principia with FARc In KSP 1.11.1. Thanks! I have found that I can create a fatal crash for Principia with FARc version for 1.10.x = 0.16.0.1 "Mader" under some circumstances...specifically dropping boosters apparently near the KSC shoreline (so at the moment I speculate it may be related to whatever is driving the 'water' issue some reported in some of the posts above experiencing with FARc in 1.11)

Ok, thanks! I will create an issue at GitHub & attach the journal that I just added to the same google drive folder...I can reproduce it immediately by just adding FAR & dropping those boosters...FAR appears to not have yet been released yet for 1.11 so I am hopeful that team will be willing to look into whatever is identified....so will be grateful for you taking a look when you have time.

@pleroy when you have a moment, I am seeing a strange type of fatal crash on frequent occasion after only some radial de-couplings...launching the same base rocket design over & over for various short Kerbin missions... I'm posting it here rather than at github for now because way back there was #1549 that looked a bit similar...but in that case was due to KIS...so would like your suggestions of what to try next based on the following: One odd thing about this one is that it occurs frequently but does not occur all the time, but with this craft always seems to occur some amount of time after we drop the 1st set of SRBs...as if the debris only creates a crash if it goes or has some yet unknown particular place or thing happen to it, & when I grep the info log for the decouple events, it appears that the fatal sequence always has the additional "switches parent from Kerbin to Sun" like the following example line: I0310 20:09:38.368726 19784 vessel.cpp:111] Vessel x2b Debris (1646c583-f59f-4180-b09a-3e06707d0ec6) switches parent from Kerbin to Sun I am collecting full sets of logs & some grep output for "switches parent from Kerbin to Sun" & for "Removing part radialDecoupler" in this google drive folder (sorting by name at least puts the files in order) I0309 20:38:27.741910 23448 pile_up.cpp:81] Constructing pile up at 000001CEB8852210 I0309 20:38:27.741910 23448 part.cpp:219] Adding part solidBooster.sm.v2 (74E942B3) to the pile up at 000001CEB8852210 I0309 20:38:28.101909 23448 vessel.cpp:111] Vessel x2b Debris (0fdfd659-daec-4c6c-91d6-5242c5294f22) switches parent from Kerbin to Sun I0309 20:38:28.102910 23448 part.cpp:233] Removing part radialDecoupler (3319418D) from its pile up at 000001CEB884FE50 I0309 20:38:28.102910 23448 pile_up.cpp:106] Destroying pile up at 000001CEB884FE50 I0309 20:38:28.102910 23448 part.cpp:67] Destroying part radialDecoupler (3319418D) @ 00007FFE68396360 google::LogMessageFatal::~LogMessageFatal [0x00007FFE6839635F+47] @ 00007FFDE561C2A5 principia__VesselVelocity [0x00007FFDE561C2A4+1368708] @ 00007FFDE55C760E principia__VesselVelocity [0x00007FFDE55C760D+1021421] @ 00007FFDE549E213 principia__FreeVesselsAndPartsAndCollectPileUps [0x00007FFDE549E212+386] @ 000001CD994BBECD (No symbol) [0x000001CD994BBECC] F0309 20:38:28.102910 23448 vessel.cpp:155] Check failed: !parts_.empty() Thanks!

we use it in KSP 1.11.1 The parts seem fine so far in sandbox mode & also show up in science mode at various places in the tech tree. The KerBalloons mod's flight recorder even appears to record data to .csv from some of the sensors even after they are deployed from the craft, which is nice for edu projects...

LGG's KerBalloons Re-Inflated 0.5.0.7 appears to work as expected for me with Principia including in KSP 1.11.1 ( KerBalloons has been a favorite mod of mine in combination with with Principia regarding launching 'Rockoons' (link) for awhile... ) for reference: updated my old post on this issue to reflect LGG's adoption

I loaded 0.5.0.7 in KSP 1.11.1 with Principia Gödel & lifted one test balloon flight...seems to work fine ( & behavior appears similar to the revised 0.4.4 I have been using the past >1 year, including responding to KerbalWind, etc.). Thus, looks good so far to me per this quick test flight...proceeding with your planned CKAN release seems fine to me.... I have updated my old post on the Principia forum to point to this topic thread. & @linuxgurugamer I really like the configuration changes you made regarding the universal balloon! I'll keep an eye out for anything unusual. With Principia (& Kerbal Wind Continued ) Also, I will find it interesting to try the 'AirPark' you mention...since I am not sure Principia would handle 'floating landed states' since 'only sane things should happen to moving vessels' so I am glad that AirPark is provided as a separate mod. Thanks again!

great! the .dll I made for myself in 2019 uses by simply removing the 3 instances of .RidgidBody from the decompiled 0.4.4 from CurseForge then recompiling.

@linuxgurugamer Thank you for adopting this great mod. I can take a closer look this weekend. In 2019, I made a Principia compatible version for myself that has worked well since then. I see over at GitHub that you forked the github version = 0.4.3. I assume my simple pull request to Fengist there did not show up in the new fork but that you have made similar changes based on your posts above. I see that you merged the request :-) The 0.4.4 version released at CurseForge has the nice flight recorder & science tools. A few more details at the link to my specific post in the Principia thread that followed up on the thread @pleroy references in the post above: https://forum.kerbalspaceprogram.com/index.php?/topic/162200-wip181-191-1101-1111-principia—version-gödel-released-2021-02-11—n-body-and-extended-body-gravitation/&do=findComment&comment=3662462

For anyone with access to a 3D printer who would like to print a terrain model for themselves to go along with the Perseverance Rover's arrival at Mars (whether it be a fireball, a new crater, or a smooth landing...I'm looking forward to the event)... We have made some printable models using the NASA Mars Trek ...& anyone can also pretty easily make their own custom models as well either directly in the NASA Trek or with a DEM & QGIS... (I also wrote & included a short 'story' about the Mars atmosphere: sunset & cloud colors and how that relates to space garlic bread, the U2 spy plane, etc...with wording geared to be mostly understandable by younger students, while the links are more detailed & advanced with some nice images/fun videos) https://www.thingiverse.com/thing:4747950 Mars Perseverance Rover Target Landing Area 3D printable Terrain Models Enjoy!

a moderator pointed me to this post, I see you have posted in English on the KerbalEDU forum & since English is my primary language, my response here is in English (Google did an impressive job translating your message). Both KSP & KerbalEDU have a steep learning curve. KerbalEDU as it stands today is mostly now a licensing matter since it allows any person to use a copy. TeacherGaming seems to have kept KerbalEDU at version 1.4.5 since it was the last version to support both x64 & x32 operating systems which was easier for schools with older computers. I also own both regular KSP & KerbalEDU mostly for licensing reasons since each KerbalEDU license can be used with any one person at a time when mentoring not just my son. Regarding running KerbalEDU, KerbalEDU 1.4.5 does not use license keys...instead you sign in via web browser to the "Teacher Gaming Desk" to view lesson plans & create a class & student ID code which you then have your child/student use to sign into the Teacher Gaming app. (The class & student ID that you created in TGdesk helps you track how much time is spent in KerbalEDU, for example ;-). Here is a screenshot of TGdesk: web browser TGdesk For the age of your child, the learning opportunities are similar between the versions. However in my experience I use regular KSP more often today with my son since KerbalEDU did not (yet @MarkZero?) update to 1.9.1 or later where the handling of large craft in KSP is much easier on the computer's CPU & also because Principia version Fatou was the last version of the mod Principia to support 1.4.5 and there are many valuable improvements to that mod since. You may find that regular KSP with at least the 'Making History DLC" would provide similar "mission" lessons. Or you can also add the Making History DLC version for KSP1.4.5 to your KerbalEDU GameData folder. Also KerbalEDU 1.4.5 will run just fine most mods for KSP versions 1.4.5 to 1.7.3. With either KSP or KerbalEDU, I suggest that you quickly get familiar with using the mod CKAN to manage KSP mods If you decide to keep using KerbalEDU, and if you have difficulty launching KerbalEDU lessons directly from TGdesk then you may find it easier to use the renamed versions of the lessons I posted in the KerbalEDU forum (I matched the Mission name that is shown 'in game' on the KSP 'mission' & 'scenario' menus with the Lesson name...this makes it easier to pick the right "Mission" or "Scenario" file to go with a specific lesson on TGdesk.