Originally Posted by tpbklake
AT&T and HTC have not yet released an OTA update for the Aria, thus the reason the error message is still occurring. Once AT&T gets ready to release the update, the server will be brought on-line and then the error message should stop.
Why not root your phone and head over to XDA-Developers and load up Liberated FR Series (FR008 is the current version). This ROM is the European Gratia released Froyo ROM with HTC Sense and works just fine.
Thanks for the update, better info than HTC or AT&T provided. I've been thinking of rooting the phone as well, I'm an old HTC Tilt owner and I am very familiar with XDA Developers. Thanks again