Ghostcast Unable to find DHCP server.

Hello,

I am currently running Ghostcast 11.5. Server Suite. I am trying to image Lenovo T510's but running into a problem when running multicast. I am getting the error "Unable to find DHCP".

I'm using a dummy Cisco 3750 switch.
My DHCP, PXE, and TFTP is the 3com software that comes with the suite.

I can connect to the Ghostcast session but as soon as I try connecting to multicast it stops and gives me the above error.

I have been using it on my T520's and it works fine. I only run into this problem with the T510's.