Apparently you have a problem in the system with the .NET Framework 3.5 .
To correct this issue:
1. On the Start menu (Windows), click Settings > Control Panel.
2. In Control Panel, double-click Add or Remove Programs (Windows 2000/XP) or Programs and Features (Windows Vista).
3. Uninstall all versions of .NET Framework, beginning with the newest version first.
4. Download and reinstall the
Microsoft .NET Framework 3.5 Service Pack 1
Regards
Antonio Barroca
Autodesk Product Support
We appreciate your quick
feedback on this forum!
---------------------------------------------------------------------------------------
If my post answers your question, please mark it as an Accepted Solution, so that others can find answers quickly!
For more tips & tricks:
http://upandready.typepad.com
Antonio Barroca
Product Support Specialist
Autodesk, Inc.