Just downloaded and installed the v1.05 Eleven Rack driver. I have had the Eleven Rack since it was first released, and have been using it with both PT LE 8.05 and Logic 9.1.5 on a 2009 Nehalem Mac Pro. Getting ready to move up a version or two, so I figured I would experiment with the v1.05 (11R) driver. Pro Tools 8.05 recognized it right away, with no fuss. However, Logic had no output until I tweaked the preferences, because the new 1.05 driver is called "Avid Eleven rack" --> the Logic preferences had to be reset from the old "Digidesign Eleven Rack" driver. I shut down and repowered both the computer and 11R, then checked Audio-MIDI setup. Looked okay in there, so opened Logic. Once I selected the new v1.05 "Avid Eleven Rack" driver, the output was fine and the obsolete "Digidesign Eleven Rack" driver went POOF. Not everybody will have this issue, but if you use your Eleven Rack as a front end to other non-Avid applications, you might keep it in mind. I was also experimenting running both Logic and OSX 10.6.8v1.1 in full 64 bit mode, so was not sure if that was the problem. But the issue was the name change for the driver. PT 8.05 ran fine in the 64 bit Snow Leopard, and a little snappier, even though PT is still 32 bit. Still have to pop for the EREP, too.