Can't edit craft

[Wojtus]

Hi,

I have encountered following bug: I can't edit crafts in VAB and SPH. After entering them, I see all available parts unsorted on the left. Category buttons are gone, however I can get them back by cycling "advanced mode". Selecting a part instantly places it on the building floor, clicking another part puts them in the same position (so they overlap). No part on the screen can be moved with LMB, however RMB functions work. I can load a craft, but still can't edit parts.

This is how it looks like: http://imgur.com/a/G80sC#0

output_log Gives a big error when I enter VAB:

NullReferenceException: Object reference not set to an instance of an object
  at RDTechTree.LoadTechTree (System.String filePath, System.Collections.Generic.List`1 rdNodes) [0x00000] in <filename unknown>:0 
  at RDTechTree.ReLoad () [0x00000] in <filename unknown>:0 
  at RDTechTree.PreLoad () [0x00000] in <filename unknown>:0 
  at RDTechTree.FindTech (System.String requiredTechId) [0x00000] in <filename unknown>:0 
  at PartListCategories.TechTier.ExclusionCriteria (.AvailablePart aP) [0x00000] in <filename unknown>:0 
  at PartCategorizer+. (.AvailablePart ) [0x00000] in <filename unknown>:0 
  at System.Linq.Enumerable.Any[AvailablePart] (IEnumerable`1 source, System.Func`2 predicate) [0x00000] in <filename unknown>:0 
  at PartCategorizer.Setup () [0x00000] in <filename unknown>:0 
  at EventVoid.Fire () [0x00000] in <filename unknown>:0 
  at EditorPanels.ShowPartsList () [0x00000] in <filename unknown>:0 
  at EditorLogic.StartEditor (Boolean isRestart) [0x00000] in <filename unknown>:0 
  at EditorLogic.Start () [0x00000] in <filename unknown>:0 
(Filename:  Line: -1)

and when I try to click a part to edit it:

Exception: FSM Error: Cannot switch states before starting. Please call StartFSM() before running the FSM.
  at KerbalFSM.RunEvent (.KFSMEvent evt) [0x00000] in <filename unknown>:0 
  at EditorLogic.OnPodSpawn (.AvailablePart pod) [0x00000] in <filename unknown>:0 
  at EditorLogic.SpawnPart (.AvailablePart partInfo) [0x00000] in <filename unknown>:0 
  at EditorLogic.OnPartListIconTap (.AvailablePart p) [0x00000] in <filename unknown>:0 
  at EditorPartList.TapIcon (.AvailablePart part) [0x00000] in <filename unknown>:0 
  at EditorPartIcon.OnTap () [0x00000] in <filename unknown>:0 
  at EditorPartIcon.MouseInput (.POINTER_INFO& ptr) [0x00000] in <filename unknown>:0 
  at UIButton.OnInput (.POINTER_INFO& ptr) [0x00000] in <filename unknown>:0 
  at AutoSpriteControlBase.OnInput (POINTER_INFO ptr) [0x00000] in <filename unknown>:0 
  at UIManager.DispatchHelper (.POINTER_INFO& curPtr, Int32 camIndex) [0x00000] in <filename unknown>:0 
  at UIManager.DispatchInput () [0x00000] in <filename unknown>:0 
  at UIManager.Update () [0x00000] in <filename unknown>:0 
  at UIManager.DidAnyPointerHitUI () [0x00000] in <filename unknown>:0 
  at VABCamera.Update () [0x00000] in <filename unknown>:0 
(Filename:  Line: -1)

Now, what is important: I can reproduce the bug by opening my savegame. But if I open a "clean" save first, it kills the bug. It works like this:

1. Start game, load clean game: no bug.

2. Start game, load clean game, main menu, load "my" game: no bug.

3. Start game, load "my" game: BUG.

4. Start game, load "my" game, main menu, load "clean" game: BUG.

Of course I've tried to save "cured" game, but it does not stay this way when reloaded.

Of course here's the "bugged" savegame attached. Full output_log is added to the archive:

http://s000.tinyupload.com/index.php?file_id=01911753588895593723

I hope you will be able to reproduce it using my save.

Edited June 16, 2015 by Wojtus

[Wojtus]

This situation also caused and empty science tree. That gave me a clue.

Reason? Mods (yes, mods on unmodded install). Earlier I have installed a few mods. Then I have deleted and reinstalled the game, but kept my gamesave. Looks like something is left in the gamesave what umodded game cannot ignore properly.

[sal_vager]

It's most likely the path to the tech tree, which module manager changes, the correct path is:

"TechTreeUrl = GameData/Squad/Resources/TechTree.cfg"

[Fabri91]

Had the same problem, but fixing this has sal_vaged my save!