Recently I installed Visual Studio 2013 Express Edition for Desktop. Before that I was running Visual Studio 2012 Ultimate Edition, which gave me no problem then. Now, after installation of 2013 edition, 2013 edition works quite well but whenever I tries to open 2012 edition, it says:
Data Source Must be set by the time the window is shown
I am using ThinkPad x200 with Windows 8 Pro x64 bit.