Every time I start Visual Studio 2008, the first time I try to run the project I get the error CS0006 The metadata file ... could not be found. If I do a rebuild of the comp
In my case, I found out that one of my solution was referencing something that wasn't there on the computer (VBIDE). Once i removed the offending reference, the rest of the projects built correctly. Hope that helps someone.
And in another situation, I moved some code from one project to another, and that piece of code was referencing Json.net. I manually added a reference to Json.net but that made the problem come about it. I solved it by installing Json.net through NuGet and that made the problem go away. Hope that helps someone.