Running on Windows 7 build 7100, I have Visual Studio 2008 SP1 and Visual Studio 2010 Beta 1 running side by side.
The only problem I have run into so far (as much as conflicts go) is that all of my .csproj, .sln, .cs, etc file extensions now open Visual Studio 2010. Not ready for that move yet…but it’s an easy fix.
In Visual Studio 2008:
Tools | Options…, Select Environment > General, then click the “Restore File Associations”.
But wait, that fixed everything but .csproj (.vbproj, etc) files. All of my projects were still launching in VS 2010 if there was no associated solution file.
Copying an OLD version of VSLauncher.exe from a machine with VS2008 only to my side-by-side installation now launches all double-clicked project files in VS2008. VSLauncher.exe is found at:
c:\Program Files\Common Files\Microsoft Shared\MSEnv
97766808-cd83-424b-a7a2-8ed7f70c02d3|0|.0
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