My coworker, Aaron, said he was having problems with VS freezing / hanging since he installed Microsoft Office 2010 x64. After reading through a number of articles it looks the uninstallation of Office 2007 and/or the installation of Office 2010 x64 causes problems when you switch to design view in VS.
Clearly that's wasn't my problem but I thought it might be related so I followed the same repair process for the "Unrecoverable build error".
- Go to the Control panel
- Go to Add/Remove Programs
- Select Microsoft Visual Studio Web Authoring Component
- Click the Change button
- Select Repair
- Once it is done repairing the installation, Restart your computer
Updated on 7/15/2011:
I eventually figured out the problem with the "Unrecoverable Build Error" problem. Check out this post for more information.