Just in case anyone needs it, here is the MSDN article that I used to determine the information that I posted:http://msdn.microsoft.com/en-us/library/vstudio/bb383985.aspx
I initially used the suggestion from Kyle about manually updating the ToolsVersion value to "4.0" in the isproj file to fix a build issue (TFS 2012).However, as Kyle pointed out "but you may have to [change the ToolsVersion constantly] ... until a pa...