The issue

   Upon running the installer for any version of TestAdvantage 2007 volume 2 and earlier, you receive a message similar to this. 
Mercury Interactive QuickTestProfessional Version Check
Fatal Error found 
With one or both of QuickTest Professional version, and .NET Add-in versions will be identified as 0.0 

Why this is an issue

     To stem issues with the installation of TestAdvantage, we put in our installer tests…