Hi Keith,
I too am running Lion and having issues with my DJM-T1 drivers. I am seeing the same error over and over again when I click on the Setting Utility, even after FIVE re-installs. I actually can't even get sound to play out through Traktor. I don't know what to do now. Hoping Pioneer has a speedy resolution to our problems or I am about to return this overpriced mixer. :-/
Regards,
Brandon