VAB not fully loading on revert

[Rodger]

Sometimes when reverting a flight to the VAB, it doesn't crash, but the scene doesn't load properly. Eg: http://i.imgur.com/g3GeLMD.jpg Leaving the VAB and re-entering it, it will load properly. And once it happens for the first time in a session, it will then happen every time I revert to VAB. Anyone seen this before? Running 64bit Mac. I'll try get it to happen again and grab the log, tho I didn't see anything obvious last time I checked it.

[Rodger]

Well just checked the log when it happened again, and it was just spamming

"[AB] Error in OnFixedUpdate - Object reference not set to an instance of an object"

Not very descriptive... Is there a way to get more info on what's causing it? Full log: https://www.dropbox.com/s/zg3dkcc6y5st1d8/PlayerVABbug.log.zip?dl=0

[Rodger]

It's still happening, and here's the 2 logs from the last time:

https://www.dropbox.com/s/itvcy64dx6n06dy/KSP.log?dl=0

https://www.dropbox.com/s/vpw6n1pfpwxa14z/Player.log?dl=0
 

This time there are some NREs relating to OnDestroy, like:

[EXC 13:42:34.035] NullReferenceException
    UnityEngine.Component.get_transform ()
    PQSCity.OnSphereReset ()
    PQS.Mod_OnSphereReset ()
    PQS.ResetSphere ()
    PQS.OnDestroy ()

or

NullReferenceException
  at (wrapper managed-to-native) UnityEngine.MonoBehaviour:StopCoroutine (string)
  at ScienceChecklist.ScienceChecklistAddon.Unload () [0x00000] in <filename unknown>:0
  at EventVoid.Fire () [0x00000] in <filename unknown>:0
  at ApplicationLauncher.OnDestroy () [0x00000] in <filename unknown>:0

And after testing some things, it kind of seems related to having in-game windows open on revert (like contractwindow+/MJ/KER). closing some of the windows before reverting seems to stop it from re-occurring without having to relaunch KSP...

And I've also tried clearing the input lock, but it didn't help.