I purchased Windows Vista Ultimate edition and am having the exact same problem on my Dell Desktop XPSGEN5. I can not remove the Roxio DLA no matter through the control panel add/remove program. I am not sure if I removed this before starting the upgrade to 32bit Vista.
However after I click cancel on both warnings about 5 or 10 times, it goes away. But it shows up again later.
I also have a problem with Media Center when I access Music and Music library, I get an error 80040155 about audio. I can play music with Media Player, iTunes, etc no problem. It also plays and records TV great. I use a Creative soundblaster Audigy 2 card and creative only has a beta driver at this time-Feb 9, 2007.
My new Vista program is possessed with a demon file that I cannot get rid of regardless of numerous attempts.
On start-up a window entitled ?Program Compatibility Assistant? appears with the following message:
This driver is blocked due to compatibility issues.
The driver identified is: ?Driver: Sonic Solutions DLA?
What is worse is that this window keeps popping up frequently as I attempt to work. (?Yes, I know you?re there; just leave me alone? is my response.)
I have tried to remove this offending driver through the Vista remove programs process without success. It apparently was installed by DELL on my computer at the factory along with other files associated with Sonic Solutions? Roxio Creator ? My DVD Combo.
I do not use the program.
Every time Vista loads, this annoying pop-up window appears with the message that the driver is blocked due to incompatibility issues. No help is available on line when one selects the ?Check for solutions online? option. The answer given is that ?Windows will notify you when solutions become available.? The first thought is that this solution will appear along about the time donkeys fly.
Is there a way to remove this file?
Thank you.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic