Thanks for the response, I'll check back again.

Hello - hopefully you can help.  These are the steps I have taken to try to configure the Alphatrack for Logic 9.  Despite doing the following, Logic is still not detecting the Alphatrack in 64-bit mode, however it does detect it in 32-bit mode.

1.  Installed AlphaTrack_OS_X_1_3_0.dmg
2.  Read and followed directions in Logic_8_and_AT_v1.1.pdf
3.  Placed AlphaTrack.bundle in MIDI Device Plug-ins folder
4.  'Rebuild Defaults' in controller surfaces
5.  changed usb ports (as per other thread)
6.  Still not being detected in Logic - in Controller Surfaces -> Setup, I see 'No Device' and 'Control Surface Group 1' with a list of parameters.  There is no icon in the right-hand window.

My system is Mac OS 10.6.4, 2.66 GHz Quad-Core Intel Xeon, 8GB 1066 MHz DDR3 ram.  Logic 9.1.1  running in 64-bit mode.