Visual Studio 2010: Could not resolve mscorlib for target framework '.NETFramework,Version=v4.0'

Question

We are currently migrating all our solutions from 2005 to 2010 (that\'s right, we\'re skipping 2008!). We are also changing our file structure to make some more sense (some

Answer 1

I had the same issue when the source directory was read only. If I sync my workspace with our version control server (Perforce), it will make all of the directories read only by default unless I select that I am checking out the directory for editing. Sometimes I am lazy and don't do this since I am the only person working on some of these projects at any point in time. But this error goes away clear the read only flag.