Can"t start game

[Bejbibu]

When i start the launcher and click "Play cRPG" a window pops out :

Critical error

An item with the same key has already been added.




Any ideas what that means/how to fix it ?

[Oberyn]

You should look at some of the other posts in here. You can check "Offline mode" to bypass patching server, and it works. Or you can find filelist.txt (I think) and delete it, which apparently also fixes it.