
I am having a problem with Visual Studio 2008 that only started after I had installed Office 2010. If you get this problem then there is a simple solution, well, one that worked for me. You need to run a repair on the “Microsoft Visual Studio Web Authoring Component” that is part of Office 2007.
You can find the setup in the following locations:
Windows 64bit
C:\Program Files (x86)\Common Files\microsoft shared\OFFICE12\Office Setup Controller\Setup.exe
Windows 32bit
C:\Program Files\Common Files\microsoft shared\OFFICE12\Office Setup Controller\Setup.exe
My guess is that when Office 2010 is installed it has a new version of this component that has not yet been made compatible with Visual Studio 2008…
It was a frustrating couple of hours this morning to figure it out with the bulk of the time taken up with an ineffectual repair of Visual Studio 2008 SP1, ahh well, now I know…
I found this post on Office 2010 gotcha 2: Visual Studio 2008 Locks form Martin Hinshelwood - A Scottish software developer: SSW Solution Architect & Microsoft Visual Studio ALM MVP! I really want to thank him a lot. 
4e6d27c7-aa29-4240-8ae2-a818ee7ca4c9|0|.0