(another) null reference exception, in editor, related to struts.

[Nemrav]

KSP .log file

When in VAB, when placing/deleting/moving struts or fuel lines, the game throws a stream of null reference exceptions.

These disable the function of all buttons, except for the click effect on the launch,save,open,leave buttons and the debug menu. The game does not crash, and I repeated the glitch twice in a row.

[EXC 12:58:24.368] ArgumentException: An element with the same key already exists in the dictionary.
	System.Collections.Generic.Dictionary`2[System.UInt32,PartCrewManifest].Add (UInt32 key, .PartCrewManifest value)
	VesselCrewManifest.FromConfigNode (.ConfigNode craftNode)
	KerbalRoster.UpdateCrewForVessel (.ConfigNode vesselNode, .VesselCrewManifest previous, System.Func`2 persistFilter)
	EditorLogic.RefreshCrewAssignment (.ConfigNode craftNode, System.Func`2 persistFilter)
	EditorLogic.DestroySelectedPart ()
	EditorLogic.deleteInputUpdate ()
	KerbalFSM.UpdateFSM ()
	EditorLogic.Update ()

this seems to be the mean problem and appears to cause a stream of related errors which are to one another :

[EXC 12:58:24.402] NullReferenceException
	UnityEngine.Component.get_transform ()
	EditorLogic.<SetupFSM>m__9A ()
	KerbalFSM.UpdateFSM ()
	EditorLogic.Update ()

Looks like something is being loaded twice and the editor doesnt know which to pick ?

[sal_vager]

Can you make reproduction steps please Nemrav, I've been placing struts and fuel lines and have not run into this issue.