I am trying to convert a VS6 project to a more recent version of Visual Studio. I installed VS2012 Express (for desktop), and converted my project(s) using VCUpgrade, and it worked very well. For other reasons I have decided to give up on VS2012 and use VS2010 Express instead, so I have now installed it (just the C++ part), but now VCUpgrade does not work anymore - and it doesn't matter if I run the one from VS2010 or the one from VS2012 that was working before! I keep getting:
Unable to convert project.
Please make sure this is a valid Visual C++ 6.0 project.
Converting using the IDE works fine. Have I ruined something by installing VS2010 after VS2012? VCUpgrade isn't very informative about what is going wrong...