[machambers]

I have been trying to communicate with my Eleven Rack using MIDI System Exclusive messages. (I need to get rig data for a foot controller project.)

The unit responds to PC and CC messages from my Ground Control and my computer via MIDI-OX and a MIDISPORT 2x2 interface.
It will not however, respond to System Exclusive messages as documented in the Avid documentation. (I signed an NDA and got the documents directly from Avid.)
The Eleven Rack MIDI out works in Thru mode and when front panel CC messages are turned on, so I don't think it's a hardware problem. The unit has Firmware 2.0.1, Build 0.1.5.7.
The same computer/interface/software/cables work properly with my Line 6 PODs, so the problem is not at that end.
Any ideas? TIA