Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - General editor bugs

I have a different Problem..
first editor Load everything went fine created a Mod.
1hour late restart Editor due to Error Cant select My mod or the main mod anymore
the only mod i see is the cow simulator
anyone encountered this? (my paths are correct)
Edit: I also have the Problem if i change in D:OS the Mod to cow simulator i cant change it back to the Main...