"Problem detected with audio clock" - Pro Tools 8.0.4, M-Audio Fasttrack Ultra

[spargo]

System info:

Windows 7 x64
Pro Tools M-Powered 8.0.4 (latest)
M-Audio Fasttrack Ultra interface with drivers: 5.10.0.5099 (latest)

What caused the problem:

I recently installed Pro Tools M-Powered 8, and I believe the default version after the install was 8.0.1. I was happily recording along. Then, I realized I hadn't updated to the newest version. So the ONLY thing I did was update Pro Tools to the latest version of 8.0.4. Then happened this problem...

Problem:

Every time I start up Pro Tools now (even a blank project) and hit play, I get this error:

"Problem detected with audio clock. Check that your clock source and sample rate are correct."

So I did check. My M-Audio control panel reads: 44.1kHz sample rate, internal clock, and 1024 samples buffer.

My Pro Tools Session -> Setup reads: 44.1kHz sample rate, 24-bit depth, and "See Control Panel" for clock source.

Any idea what's going on?

[spargo]

SOLVED...

I installed the 8.0.4cs2 update I found in the stickies in this forum, which I couldn't seem to find on the main website, and the problem is fixed.