Carmine,
I’m not familiar with the program but many old programs will not install/run on more modern OS’s. If your original program was on a computer with Windows XP, or 7 and you are trying to put it on a computer with Windows 10 or 11 it may not be able to install because the maker is out of business and unable to upgrade the program to run on a modern OS.
If this is the problem the best solution would be to
1. Keep your old computer as a dedicated Trainminder machine, or
2. Get a used machine (laptop?) with the old operating system that is compatible with Trainminder.
3, Get a “virtulization program like Oracle Virtual Box, (free) to run earlier versions of Windows on your modern computer. #3 is for people with some computer skills.
Pete