I installed Snow Leopard (10.6) on a new drive and migrated applications from the Leopard (10.5) Drive.
Digital Performer 6 survived the migration.
I also installed the Vienna Instruments 2.1 update to take advantage of 64-bit processing.
The list of installed instruments appears on the left side, but there aren't any choices on the right side.
Any suggestions?
Richard
P.S. I'm happy that I have a bootable drive of OS X 10/5 that I can access as needed.