Error 40217 using PXE

Greetings. I recently setup a new server with 2008 R2. DHCP is installed and functioning properly. I've installed GSS 2.5, and the 3Com PXE boot tools.

When I boot to PXE, and ghost opens, I get the following sequence of errors:

First: http://img11.imageshack.us/img11/3260/img20121030160233.jpg

Clicking cancel on that gives me this: http://img17.imageshack.us/img17/835/img20121030160247.jpg

Clicking OK ont hat gives me this: http://img685.imageshack.us/img685/3817/img20121030160324.jpg

Any suggestions?

Again, this is using Ghostcast over a local network. No USB, no CD/DVD. 

Thanks for any help!