When you are starting 3dsmax 2015 / Windows 8 /Windows 10 with Error – max.net Unhandled Exception with this message:

The solution in this case could be:

Find this file …\bin\assemblies\Autodesk.Max.StateSets.dll (example for path –  C:\Program Files\Autodesk\3ds Max 2015\bin\assemblies\Autodesk.Max.StateSets.dll) and Rename it Autodesk.Max.StateSets.dll.back

p.s. before that you have to enable to view the hidden files and file extension