@fereremen: Type buildcubemaps in the console. That fixed it for me.
In your SourceFilmmaker/Game folder there should be folders called left4dead2, left4dead2_dlc1 and left4dead2_dlc2. If those are present and you're still seeing errors do this: Make a folder in the Game directory named left4dead2_dlc3. Download the file below and put it's contents in the folder you just made.
Now start SFM's SDK and click "Edit Search Paths For Selected Mod" and make sure all the l4d2 boxes are checked. Click OK and start SFM. Everything should be working now.
>left because he was tired of the bs
That's a real funny way of saying banned in the ass.
ay bby girl u want sum fuk
Aardvark. Artuurs is in charge of being retarded around here. Please ignore him and continue to contribute.