If you're using an ATT Tilt (HTC 8925) with Windows Mobile 6.0, you may run into a slight problem when trying to install Google Maps for Mobile. At least four separate reports have come in that indicate that there's an issue with the application installation on that particular phone. According to reports, when you try to install the application, you'll receive an error message:
The archive file (.jar) for Google Maps cannot be found at its URL. -19 Please contact your operator for more information.
According to Maps Guide Tom, Google is now aware of the issue.
Forum discussion continues at Google Groups.