Sorry... I obviously didn't use my brain when I read your post.
The following folders (modelsrc, materialsrc and mapsrc) need to be set inside the following path:
So those folders (if they don't exist) must be made in that directory. And you settings for them inside WWMT must be set to those folders in that directory.
Your bin directory, however, is correct.
The following folders (modelsrc, materialsrc and mapsrc) need to be set inside the following path:
Code Select
C:\Program Files (x86)\Steam\steamapps\common\left 4 dead 2\sdk_content
So those folders (if they don't exist) must be made in that directory. And you settings for them inside WWMT must be set to those folders in that directory.
Your bin directory, however, is correct.