C7.01 Mac Doesn't Recognize HW Synths

I have 4 HW synths connected to my Mac using an Edirol UM-800 MIDI interface. Connections test OK in OS X Audio-MIDI Setup. Both Digital Performer 8 and C6 recognize the synths, but C7.01 doesn’t. Tried in both 32 and 64 bit. Running OS X 10.7.5