The operation could not be completed

I get this error, The operation could not be completed, quite frequently in Visual Studio 2010 Beta 2 and to my knowledge, I only get it when double-clicking a code file, .cs or .vb, in Solution Explorer. If I try again, the same thing happens, the Microsoft Visual Studio dialog box, pops up with the error message. Short of closing down Visual Studio, which does work, simply open the associated markup file, if you’re trying to open a code-behind file, right-click anywhere in the Text editor containing the markup, and then click View Code. Alternatively, right-click the code file in Solution Explorer, and then click Open. Rather simple, but you don’t always think about it, when you get set in your ways of doing things. 😉