Either had to run it on their old PC or install it on a "Virtual PC" running Windows 98 or such. Sorry to hear about your loss.
When trying to access my latest data set, I get the "Error #49" message. I can access prior datasets but they are out of date. I've tried to reinstall the disks but this does not help, nor does trying to access from my backup on my flash drive (F:) or Zip (E:) as it does not recognise these. Since I changed computer in July MYM has not recognised my CD (D:), so I could never get a CD backup.
Any help would be appreciated.