Game is crashing after copying and pasting Connection Point branches in Nifskope

[Crash180]

I noticed I was missing some snap points in some files so I fixed one and pasted them into the other files. Came back later and the game crashed when trying to launch the game save. After restoring the files from a backup all was good. I tested pasting a branch into only one file and the game crashed while in the build menu. Restored the file and all was good. Pasted a branch from a vanilla file and again crashed in the build menu. I restored the file and then pasted each point individually from the branch and no problems. I then duplicated this file and pasted its branch into the working file and it crashed in the build menu. Running Nifskope 2.0 Dev 10. Any thoughts on why this is suddenly happening?

Edited May 18 by Crash180