Inventor and Solidworks Thumbnails

Why can I view Autodesk Inventor and Solidworks thumbnails in Windows Explorer but cannot see them with Dopus? I am using Windows 7 X64.

Autodesk Inventor's thumbnail provider loads DLLs in an unsafe way which Opus blocks by default for security reasons.

You can turn off the blocking if you wish. See Autodesk Inventor thumbnails in Opus.