Mac Pro OS 10.5.5 does not see the midi interface of Projectmix I/O. Audio is fine, and operates properly. Driver and firmware are correct versions for 10.5.5. I also have Windows Boot Camp installation on the same computer, and the midi interface shows up fine in that OS. The control surface operates as expected on Windows. On the Mac side, though the driver does show up in the Mac driver folder, Pro Tools 8 M-powered cannot see it, nor can the Projectmix Control.app. The device does appear on the audio side of the audio/midi set up utility, but not on the midi side. I've done clean uninstalls, and have even removed all but Pro Tools drivers. Nothing's worked yet. So, what's next?