Quick question re. error in MSN adCenter

I've done a bulk upload into adCenter using Speed PPC and am getting this error for long tail keywords:

"Ad title should not exceed 25 characters"

I'm displaying two ads - one with dynamic keyword insertion (with default text), the other a static ad.

Given that I've specified default text in the DKI ad, and have a static ad to fall back on, I can't figure out why it's rejecting the long tail keywords.

Any way to fix this? Or is adCenter just giving me a "FYI" message?

Thanks for any help.

Moe