Titanium 867 G4, 768 Ram+ Mbox. Even with the smallest session, only 1 stereo track running, no plug-ins, pro tools only runs for 5 or 6 seconds. Then sudden stop. A message warns me "Cpu is holding off USB audio. Try increasing the Buffer size...etc." Tried several buffer/CPU % settings, nothing happens. The cpu meter is always at idle level, but all of a sudden it jumps to clipping level, and this causes the stop. I noted that the cpu meter jumps to RED even with no playback at all. Please help me.
Just installed Pro tools 6.1 on Titanium 867 with 800 mb ram. When tryin' to enable a track for recording or playback, a pop up warns me that no volumes are designated for recording. All my attempts do designate Macintosh HD as a recording volume are failed. Yes, I have OS X, latest version; yes, I've trashed my prefs; yes I've repaired disc privileges in disk utility menu; yes I've tried with external fire-wire hard disk: same problem (won't be seen as valid volume for recording or playback); No I don't have any partition. My Titanium has double boot (Os 9.2 AND OSX).