If you use Visual Studio 2008 and install Microsoft Office 2010, it looks like there’s a very good chance your Visual Studio Web Designer will be clobbered. The symptom is when you go to visually edit a web page (html, aspx, etc) in Visual Studio, it will appear to completely lock up. Actually, I think what is happening is a message box is popping up, UNDER Visual Studio so you cannot click it or do anything but End Task to close Visual Studio.
Some searching around quickly came up with a few things to try.
You need to run “C:Program Files (x86)Common Filesmicrosoft sharedOFFICE12Office Setup ControllerSetup.exe” and select Repair (drop the “(x86)” portion if you’re running 32-bit).
On one of my machines, this was sufficient to repair the problem and Visual Studio went back to normal. However, on another computer I had to completely uninstall that software by selecting Uninstall instead of Repair. When that is done I then ran the Web Designer Core setup from the Visual Studio CD located at WCUWebDesignerCoreWebDesignerCore.exe. Be aware that if you were running VS Service Pack 1, you’ll want to reapply it after that setup completes.
One the topic of the Office 2010 install, I must say that my experience has been dismal. In addition to this problem of breaking Visual Studio 2008, on one of my machines I had to manually uninstall Office 2007 because the new 64-bit setup detected that the old version wasn’t copletely gone after uninstall. As you can guess, this was a pretty lengthy process, following a document from Microsoft led to about 10 minutes of hunting down and deleting various directories, files, and registry keys. Ouch.
Office 2010 is a nice upgrade, but Microsoft sure seemed to have botched the install.