Pro Tools just bounces in the dock...

[LarryMal]

I've seen this problem posted here before and think it is fairly common, but the search didn't turn up an answer for me. Anyway, I have Pro Tools M Powered 7.4 having been one of the upgrades from Academic 7.3. My iLok is up to date, I had to update that for the 7.4 upgrade. I am running a Power Mac G5 (PPC) with Tiger 10.4.11, 4 GB's of RAM, and an M-Audio 192 as the soundcard. There is no other interface going into it today. Pro Tools 7.4 had always worked for the last few months with no problems, so I have used it, lightly, anyway.

I upgraded to the 7.4cs3 thinking that might help, now it bounces in the dock 3 or 4 times instead of once, anyway. I have restarted the computer with the upgrade, no help. Ableton Live 5, Digital Performer 5.13 and Logic Pro 8.0.1 all boot up OK, so this tells me the problem is not likely with Core Audio but more likely isolated to Pro Tools. Any thoughts?

Now that I think about it I do have the trial of Eleven, which I never used or even started to use yet. Could this be the problem?
Thanks in advance all, L