Studiomdl.exe and Vtex.exe - Unable to find gameinfo.txt
This error usually indicates Steam did an update or you are working with a mod that doesn't use the Steam VProject setting. Read the fix here.
Studiomdl.exe - SteamStartup() failed
You'll get this studiomdl error if you try to compile a model and Steam isn't running.
Utilities Rollout
The utulities rollout contains various features, functions and utilities to help work with WWMT models.
Lighting Rollout
This rollout contains lighting controls and other miscellaneous controls that are either rarely used or are experimental.
Unknown Bitmap Filetypes Crash VMF Exporter
Do not use bitmap filetypes that Max doesn't know how to read.
Using unknown bitmap types on world geometry and displacements will crash the VMF Exporter. This currently happens if using VTFs in materials in 3ds Max 2013 since there is no VTF plugin yet.