[LVL ED] A working map crashes the editor !

[daortir]

Level Editor has stopped working... Nothing else.

The .map file is intact I guess since it works in game. For some reason there must be an issue between the editor and the .map file. I really never had this issue before, I'm sooo confused...

I am feeling really stupid right now, I can play the map but not edit it :B.
Edit : I did try to reinstall the editor without any improved result. I think there is something in the .map file that crashes the editor, but when it comes to know what it is...