Digiinit?, A small one, but tough! Options

[dieselmex]

Well, this is my first post in here. For all I've seen, I think I'm in the right place to start with a question that I can't solve at all!

I WAS running PT 6.2 on a G5. For a year, everything ran fine. I had the stupid idea of installing QT 7 and going Pro with it! Final Cut decided to stop working forever. Not the same with Pro Tools. But, since I do both, film and music, I needed Final Cut to work. OK. I think that in my 25 years of using a Mac, this time it was it. I almost gave up doing all possible and imaginable things. Even getting a uninstaller from Apple for QT 7 (have you EVER seen something like this, I mean, EVER?). OK. It didn't work. New accounts. Preferences. Users. Reinstalling!!! :-( Nothing worked.

So I did the unthinkable: reinstall a fresh system. Goodbye prefs and all. GREAT!!!! Final Cut worked smoothly. Now, PT decided not to work. At all. Uninstall. Follow all kind of secret formulas. Done that, been there. Change the clock? Right! Trash the whole enchilada? Right! Rebuild everything? Of course! New user? Yeah! Uninstall again? But, of course! Zap the RAM? Obviously!

And the frigging' little naughty message appeared again and again: "a DigiSystem INIT is required". I've seen it before in my Sound Preferences for a long, long time. It's gone. No matter what I do, it's gone forever.

I've been considering adding a new "previous system" to my directory to go with the pre-previous system that's already there (could this be the culprit?). But, as you can see, I'm tired and this is the second one in two days!

I think I should post a REWARD! sign right here!

Any ideas?
Thanks for your amazing patience!