Padishar

You'll have to give us more to go on than that. At the least you should upload an output_log.txt/player.log file from a run of KSP where you go into the VAB and click the button (I assume you did actually have a vessel loaded). You can find instructions on how to find the log file in the "How to get support" sticky thread in the "Support (Modded Installs)" sub-forum. Also, screenshots of what you mean by the in-flight behaviour would probably be helpful.

OnGUI is called automatically by Unity multiple times per graphics frame. You should not be calling it directly from OnStart or from anywhere else. The OnWindow function is the handler function for the GUILayout.Window you are creating in your OnGUI. Again, you shouldn't be calling it directly from anywhere.

Yes, I'm surprised it's getting that high on that CPU. I would have expected around 65-70% in the VAB. However, I have also seen reports of 8 core cpus doing 100% so anything is possible... Any chance you could run Process Explorer, find KSP in the list, do a Properties on it and take a screenshot of the Threads tab while KSP is in the editor and another while in flight?

Dropbox or GoogleDrive would both be much better (they don't have any ads at all, let alone potentially unsafe ones). Yes, I believe your CTD was probably a stock issue and will hopefully be fixed in an upcoming patch. The other exceptions in your log will get looked into as they do appear to indicate that KER still has slight incompatibilities with some of the changes in KSP 1.1.

I don't have anything against CKAN (I only use it for setting up RO installs) so, as long as it uses one of the existing download locations, then I don't mind someone including it.

I already had since the problem first occurred without change. However, I have just posted this: ...and it does show on the link above. However, "threads I posted in" is now not showing the KER thread again.

There are a number of interesting looking, KER related exceptions in your log so thanks for providing that (though your choice of file hosting site leaves a lot to be desired, flash upgrade popups and it auto-downloading the file into the viewer on the page). The last vessel you were working on in that log had over 100 parts, mostly MassiveBooster, and it died just after adding another one. This sounds like the same random crash that quite a few people have reported with the stock game.

Hehe, yeah, I'm pretty sure... I'm pretty sure it has something to do with the error I got from the backend database but I didn't get a screenshot unfortunately because I instinctively hit f5 to refresh and it worked fine.

I said it resolved itself but that only appears to be true in "threads I posted in". The link I posted still isn't showing my posts in the KER thread.

The VAB and SPH are known to use significantly more CPU than other scenes (between 2 and 3 full cores worth) even without any mods. You don't give any info about your system so I presume your CPU only has 2 cores (and probably only just hits the recommended specs for the game). Please see the sticky thread about how to provide a DxDiag report. Some people have seen an improvement by turning off the spacecenter crew in the main game settings but YMMV. Then there are the mods. KerbalEngineer definitely runs its deltaV calculations (partly) in a background thread but the impact should be minimal unless the vessel is large and complex and the calculations shouldn't run at all if the window is closed. MechJeb may well do the same sort of thing. FAR can do various complex calculations in the editor but I don't know if these happen all the time or just when the user explicitly asks for them. You should also check your output_log.txt file (or upload it to a file hosting service and post a link) for any error spam or other indications that your game is having issues.

All of them apart from HelpStrings.xml (which is provided in the mod download) contain important stuff. The names give a bit of a clue as to what area of the mod each refers to.

Did you not even try to have a look? If you had then you would have, presumably, found the Settings folder in the KerbalEngineer folder...

I had an error from the forum database a little while ago and now I notice that I don't see anything from the KER thread in some of the activity lists. I posted to it about a hour ago but it doesn't show up in "threads I posted in" or in the following link: http://forum.kerbalspaceprogram.com/index.php?/discover/content-posted/&stream_ownership=custom&stream_custom_members=Padishar I do still see the posts in "threads I follow". Edit: this issue has resolved itself since someone else has posted in the thread...

Please read the sticky thread that tells you how to report bugs in a useful manner (and then follow the advice it contains).

Are you using CKAN to launch KSP? Are you certain you are running the 64bit version? Have a look in Task Manager while the game is running (Processes or Details tab depending on OS) and look what it says. If it mentions KSP.exe *32 then you are running the 32bit version and should expect crashes with a heavily modded install. Try running KSP_x64.exe directly from a file explorer window. Also, quite a few people are reporting random crashes with the stock game so it may not be anything to do with any of your mods.

It may not provide you with any useful information but I would like to make that determination for myself, as would most other modders. You've done all that work and yet you failed to mention it in your original post. Did you try closing or reopening the UI of either mod to see if it had an effect? You also don't explicitly say that you tested either mod by itself though I'm assuming you did...

It actually appears that your game crashed when you deleted a skipper engine from your vessel in the VAB, not during a revert. This (and crashing on revert) has been reported in stock 1.1 so is very unlikely to be anything to do with KER. If you have a log containing errors then post it, don't expect people to try to reproduce your issue from a single sentence description...

Why should he? Is there something wrong with either CurseForge or GitHub?

DistantObject is failing to load. There are a huge number of exceptions from StageRecovery. There are also a large number of errors from ModuleLifeSupport which is presumably part of USI LifeSupport. Finally, it looks like ContractConfigurator has a problem which provokes several other problems. I would recommend updating these to versions confirmed to work correctly with 1.1 or remove them until such versions become available. If you still have problems then send a fresh log and I'll take another look...

Your 1.1 version (I assume he is using the latest version) seems to be causing a lot of log spam...

You have the following spamming almost continuously through the whole log: NullReferenceException: Object reference not set to an instance of an object at AGroupOnStage.Main.AGOSDebug.Update () [0x00000] in <filename unknown>:0 The plugin concerned is in the iPeer folder, something to do with action groups and staging.

The log file I mentioned may well clearly indicate which mod is the cause (e.g. a large amount of error messages being spammed).

I would suggest putting a simple vessel on the launchpad and look up at the sky. If this significantly improves the fps then your machine is having issues with the water rendering. However, I wouldn't expect a machine of that spec to have a problem rendering the water unless there is something serious wrong with the video drivers or settings. As for other possible causes, you would need to supply an output_log.txt file from a short run of the game where you just switch through a few different scenes noting the fps in each one (in the KSP_x64_Data folder assuming, with that many mods, you are running the 64bit version) and a DxDiag report (see the sticky thread in this sub-forum for instructions on making one of those). Please don't include these files directly in a post (not even in a spoiler) as they will be very large. Upload them to a file sharing service (preferably zip them up together) and post a link to the file...

I started playing KSP at version 0.23 and I have been able to see this in every version of KSP from then. It has been worse in some and better in others and various mods have, at times, made it significantly worse. There have been various threads discussing the issue over the years, just search for stutter or GCMonitor and look through the list. E.g. the following thread links to three others that discuss it in detail...

Unfortunately not. Changing various of the graphics settings may affect how noticeable they are but the only thing that will definitely substantially reduce it is the game creating less garbage.