My anti-virus program was the problem. I've reinstalled Theme Manager and was able to apply the Aero Midnight theme (thank you for including this theme) correctly. There was a big problem, though, because none of the other themes downloaded from Wincustomize would load. In trying to figure this out, I came back to this thread and saw the key to getting it to work properly. In reply #10, Philly0381 said to check the box for advanced options before applying a theme. Before I checked this box, nothing would happen when I tried to apply a theme.
I'm sure this problem is happening to other people. Is there a way to make it known in a prominent place to check the box for advanced options in the settings tab?
I just love Object Desktop and could never live without it! Thank you again Philly0381 and everyone on Wincustomize and Stardock for such great products, support, and creativity!!