Peter, thanks for the response; sorry I haven’t checked back to this post in a few days. Marianna over at the Avid forums put me in touch with their tech support; no solution at the moment (apparently my issue is a real anomaly), but they’re looking into it. When I hear something, I’ll post back here. Thanks.
Harrison
Mac Pro 3Ghz 8-core
16Gb Ram
ATI Radeon HD 5770
OS 10.6.6
Aja Kona LHe