Same problem here. No moitoring from Premiere or After Effects CS5 via Decklink HD Extreme 3D (Vers. 7.6.4). What we see is only a black screen with some flashes of stills of the monitored footage from time to time.
Final Cut Pro monitoring is doing well on the same station.
Hope that BMD fixes this problem fast. Otherwhise we have to switch to AJA.
…best regards…
Andreas