Hi and thanks for the reply:
You're absolutely right. My system 9.2 is not bootable. It only kicks in when an older application calls for it. I'm sure this makes a difference when trying to run the older software.
Keith

Hi: I have the original descent game. Recently I tried to run it on my new imac which uses system 10.2.7, but also runs earlier applications on the classic environment (system 9.2). I installed descent, but nothing happens when you click on the icon to run the game. System 9.2 opens, but then it ...