C:\Program Files (x86)\Steam\steamapps\common\left 4 dead 2\bin>studiomdl ""C:\P
rogram Files (x86)\Steam\steamapps\common\left 4 dead 2\left4dead2\models\Custom
\Book\Book.qc"
WARNING: AppFramework : Unable to load module p4lib.dll!
qdir:    "c:\program files (x86)\steam\steamapps\common\left 4 dead 2\bin\2\left
4dead2\models\custom\book\"
gamedir: "c:\program files (x86)\steam\steamapps\common\left 4 dead 2\left4dead2
\"
g_path:  "2\left4dead2\models\Custom\Book\Book.qc"
Building binary model files...
Working on "Book.qc"
Error opening c:\program files (x86)\steam\steamapps\common\left 4 dead 2\bin\2\
left4dead2\models\custom\book\Book.qc

C:\Program Files (x86)\Steam\steamapps\common\left 4 dead 2\bin>