If you click on the very top item (with the app icon) in the files pane on the left, this will bring up a screen in the editor that has a validate settings button at the bottom center. Click that and it will bring down a sheet with suggestions for fixing the app. Just click “perform changes” and that should update it so it runs on Xcode 4.
Tried both idea’s
It was set for latest Mac OS X.
I am running Snow Leopard which I thought was 64 K (10.6.8)
But above that there is a pop up is labled architectures.
In it I could change it to 32 bit. The program now runs
Thanks for both your help and for pointing me in the right direction.