I have been running PM 6 successfully on my computer.  Today, for reasons I can not figure out, it just quit running.  I tried starting the program from the desktop shortcut and also from the .exe file in the windows Programs folder.  I also tried to uninstall it and then reinstall.  Nothing has worked.
Any suggestions?
I am running windows 10 with 16 meg of ram.  I don't know the build number since I can't get the program to start any longer.
Thanks