V-ray for rhino won't start

[matt_newberg]

Have you tried removing this registry value:

No class derived from CRhinoPlugIn in plug-in file

Hi all, This is Peter Newman from Uformia. We ran into this issue with our plugin on one persons machine. They are running Windows 8 (not 8,1) but appeared to have the same issue. We identified the issues as caused by an entry in the Windows registry: In the registry folder: HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers There is an entry: “C:\Program Files\Rhinoceros 5.0 (64-bit)\System\Rhino.exe”="$ IgnoreFreeLibrary<symvol.rhp>" (Where symvol.rhp i…