I emailed Toontrack also.
1) I load Superior Drummer as a plugin in a Vienna Ensemble Pro server instance. Everything works OK.
2) I shut down my session.
3) I start my session back up.
4) Bug: Superior Drummer refuses to load samples (shows 0MB loaded)
5) Workaround: Delete the Superior Drummer plugin. Turn off VEP's audio engine. Load a new Superior Drummer plugin. Re-enable VEP's audio engine. Samples begin to load.
Unfortunately this makes me lose all my Superior Drummer settings!
Any ideas? Thanks
MOH