Topic: Fireface 400 - problem syncing to Lavry Blue DA at 96k

Hi I'm using my Fireface with a Lavry Blue ADDA convertor, with the Lavry as the master clock.  When I record at 96k, there seems to be a problem with the recorded track.  I can only playback with the right timing if I reset the Lavry to 48k even though the track is actually 96k.  I tried to go to the DDS section to use the frequency multiplier, but it's greyed out.  So the system clock is stuck on 48k (even though the fireface is autsynced to the Lavry at 96k).

Why is the frequency multiplyer greyed out during sessions?  It's not greyed out when there's no DAW running.

Thanks in advance.