RBX2Source can't find Source Games

[MarauderD]

Since an updated happend lately i guess RBX2Source does not work properly. As soon i start it it says "Could not find any sourcegames on this PC!"

I have tried the following

Reinstalling Garry's Mod Trying to put the Files in the Garry's mod Folder Trying to start as Administrator

None of those things helped.