Runtime Error 55?

[JD]

I am receiving a Runtime Error 55 "File already open" every time I open a
particular program (Examsoft/Softest). I have already tried 1) end tasking
every open program 2) shutting down and restarting 3) disk cleanup 4)
system restore to before the problem. No luck. Unfortunately, it is
absolutely not an option to uninstall and reinstall the program. Any ideas?

Thanks!