I finally found the source of a problem that's been plaguing me for a while: When working in Visual Studio I'll double-click on a file and, rather than opening the file, Visual Studio simply closes. No error message, no explanation, just a vanishing IDE. Typically a restart of Visual Studio solves the problem, but I just finished installing ASP.NET MVC Preview 5 and now my IDE is closing every time I try to open an .aspx view page, regardless of how many times I restart (or reinstall!) Visual Studio.

I finally found the problem: the Visual Studio Power Commands plugin. After uninstalling it, I can open my files just fine. Thanks to Tim Van Wassenhove and many others on Phil Haack's blog who pointed out the problem.