The software is probably written in 16-bit mode; Are you running the 64-bit version? The 64-bit versions can run 32- and 64-bit programs, but not 16-bit ones.
To see if you're running 32- or 64-bit Windows, check your System information. To get there in Windows 7, click Start, right-click Computer, and select Properties..
IF your software is 64-bit, find a machine with a Win-7 32-bit installation. IF you can't find that, see if you can find a 32-bit compatible version of the Debut admin software (which you probably won't). Thus, RBF's recommendation is your only option if you are stuck using Win-7 (64-bit) or a later O/S.
FWIW, Win-7 will allow you to install a copy of XP (FREE!), after some gyrations (which may include installing a VM {Virtual Machine} software package). There are several web sites that will guide you through the process. Not the easiest, but do-able. Two sites are
: https://www.howtogeek.com/howto/8790/dual-boot-your-pre-installed-windows-7-computer-with-xp/ - OR -
https://www.howtogeek.com/howto/109...achines-without-hardware-virtualization/ or you can search with the words
how to install xp on windows 7HTH
RIck
8^D