OK sounds as though the DEQ is not outputting the pink noise (it's hard to miss when working).  It may be worth while using the analogue output of the Deq into your amp rather than digi out to the DAC then to the amp.  Hooking up like this ought to be fine for the room correction stuff, you can revert to digi out to DAC once the correction is complete. 

IIRC one of the guys on PFM had a problem similar to this where the pink noise didn't generate via the DAC.  Can't recall the solution (possibly was to use analogue out) so it may be worth while reading the Deq thread on PFM, should still be hanging around the Audio room there somewhere. 

Stuart.