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Something is very wrong with my modded install, clicking on parts doesn't work. Tiny boxes.


Bug Report

Hello!   I seem to be having a problem with the toolbar/part selection menu, and I believe they are related.









Some of the mods I have manually installed and edited configs to tweak it to my needs, but nothing that I can think might affect this.




Randomly, (But most likely not)  my game will decide that I cant click on things and start duplicating the toolbar.  


Log keeps throwing this like 10,000 times:  "Exception: NullReferenceException: Object reference not set to an instance of an object"










Video 1:        https://drive.google.com/file/d/1UohE_cePNQDlox9CChwqlkkNQVK_58RA/view?usp=sharing


Video 2         https://drive.google.com/file/d/1rDzeitBvOd2LS8UWP0t2HvnPPMNdUKpy/view?usp=sharing



Going to the KSC, tracking station and home screen doesn't fix it.  When going to start menu the toolbar still shows up and is very buggy.        !The strangest part of the whole thing is the repeated toolbar buttons!


Quitting and restarting the game doesn't fix it either.  Though the problem doesn't show up until I do anything.    It stops me from using action groups, using toolbar items,  staging, using map view. and clicking on parts,  although sometimes the window will show up really short and skinny and you have to scroll.   When that happens I see "Place help text here"  in the window alot.

'SOMETIMES'  when I click on something via the staging menu it works just fine but it still wont let me click any of the buttons or another part.

I think it it has something to do with mechjeb.  I have launched things and clicked on them on launch, in Sandbox this time though, and it works fine. Once I reach orbit, though it begins to malfunction.    Relaunching the same craft and cheating it to the same orbit path does not produce the effect immediately.

Spacecraft controls like throttle and attitude still work though.


Stuff I already tried but isn't the cause:


Entering Space

Switching craft

Leaving flight scene with part clicked

Going to Space Center and back through tracking station

Modded parts


Kerbaled or Unkerbaled Craft.   (Unmanned)






Any idea what could be causing this or if there is a mod to fix it?     The screenshots cover most of the problems that I have seen so far.



Edit:   I deleted a maneuver node after going to TS (Tracking Station) and back and it was fixed, I staged but then when I clicked on a reaction wheel it started again.


Edited by Tundra
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Ok, I know it has something to do with maneuver nodes.   When I don't have any maneuver nodes placed everything works fine.   But when I do have maneuver nodes placed for that craft then it breaks.    Still dont know why though.   Or why the toolbar is duplicating its self.   Any of the mods in the gamedata folder affecting this?

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3 hours ago, Tundra said:

Log keeps throwing this like 10,000 times:  "Exception: NullReferenceException: Object reference not set to an instance of an object"

This, I think, is often a race condition symptom of a mod repeatedly polling KSP for a reference to something that never instantiates.  One of my theories is that the constant polling of KSP may actually be the cause of the failure to instantiate.  Lisias has looked into this more and I think is related to the way KSP uses spinlocks to grant access to some internals.  I am now officially out of my depth in this regard

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