There was a universal binary MIDI driver in the software written by a third party that isn't compatible with the Intel Macs. Hence if you were trying to run the software on an Intel Mac, there was a crash.

When the MIDI driver software is updated to be compatible with Intel Macs, iFCB will be updated to accommodate it as a Universal Binary. Until then, the software does work fine as PPC (with Rosetta).

Mel