So far I'm having zero luck getting the 1641 working with my Mac Pro. Every time I bring up an audio app (Garage Band, Soundtrack Pro) or even System Preferences - Audio, the system (OSX 10.6.2) looses the 1641; i.e. the Tascam Control Panel says 'Device: none found' and it no longer appears as audio or MIDI device to the OS. Power-cycle the 1641 and it comes back on line; i.e. the Tascam Control Panel says 'Device: US-1641' Try to use it and it is gone again. I have it connected directly to the computer (no hub) and installed the latest 1641 driver, V2.00. I've uninstalled and reinstalled the driver, tried a previous rev, still no joy. No idea what else to try.
8-core Mac Pro, 10GB Ram, 4TB HDD (internal),
Mac OS X (10.6.1),
(All tools, no talent!)
It appears my problem was caused by setting the system audio 'input' to the 1641 ('output' doesn't seem to matter). Once I changed that, Garage Band, Soundtrack Pro and Audacity worked perfectly. Fortunately all the recording app's I use have their own audio settings independent of system audio. Things are working so well now that I think I'll leave things as they are. Should new problems arise, I'll give the update procedure you describe a try.
So the Mac's system audio in is NOT set to the 1641? And it doesn't matter what you set the output to? How did you find this out? I'm having issues -- cannot even get Cubase to play any audio files (imported WAV) let alone record one. I just got this 1641/Cubase 4 LE hooked up today and have gone through everything can think of, and read about, but still cannot get it working right.