"Client-error-not-authorized" printer error using AEBS

I just recently added AEBS (802.11n) to my home network which includes:

Macbook Pro 2.4Ghz Core 2 Duo (10.5.1) connected wirelessly
iMac Core Duo (10.5.1) connected via Ethernet
PC running XP SP2 connected via Ethernet
HP 970cse printer USB connection
Iomega 500GB USB connected hard drive.

The printer and HD are connected via a USB hub to the AEBS. All computers can access the internet and the HD. However, the iMac connected via ethernet to the network cannot access the printer. The PC and the MBP have no printing issues. Although I can see the printer from the iMac, when I try to add the printer I receive the following error, "client-error-not-authorized". Since I am able to print from the other computers, I suspect there is either a driver issue or setting on the iMac getting in the way. I even tried sharing the printer from the MBP using bonjour. The printer shows up twice in the selection menu, but still receive the same error message. I also attempted to connect the iMac wirelessly thinking it may be a wan ethernet issue....same error message.

I have researched Mac911 forums as well as apple support forums with no discussion of this issue found. Probably means that its an “ID 10T” error 😉

Any answers or assistance would be greatly appreciated.