Aha! I overlooked this step. Vienna Instruments shows up under Audio Units Banks & Effects now, but I don't get a list of the Spec. Edition instruments, nor the individual instruments I have, and I can't find them. There was a list of my instrument choices on the old computer which was running OSX 10.6.8. Have attached what I get on the new computer. Have labelled the instruments for a brass trio, but no list to choose from and no sound with VE. When I change the sounds back to Garritan I can select instruments and hear playback.
I have all my sounds in a folder labelled VI Content in the hard drive. Should they be located differently? Is this a reason that there are no visible instrument lists?
Sure am a lot closer to normal operation with your generous assistance and expertise.