Richard... did you upgraded to 10.4.5 ?

I am currently using 10.4.4 a.k.a Tiger and
Catalyst 3.31h18, with the HES downloaded driver, from theier 3.3 page.
and works fine, i was pre programming a show and no Blue or Red tiles.

May be high end changed the driver dwnld at the 3.3 PRO page (i don't think so). or Maybe something we did.

The only real commands (changes) i did was...

Installed the above softwares
Open Terminal and QUIT DASHBOARD
Installed Quicktime PRO
Installed ATI Displays (last one from versiontracker) i belive is x.x.7 or so...

Just as info,... the Catalyst v4m25 (not m26 yet) has Blue tiles
and RED from time to time.

That sounds strange for me not working with the Old Dongle.