Getting PXE-E53: No boot filename received when trying to PXE boot a computer

I have a SLES10 SP 1 Server running OES 2 w/DHCP and ZCM

I have added Option 66 (server IP) and 67 (nvlnbp.sys) to DHCP
The novell-proxydhcp.conf file has the Local DHCP set (LocalDHCPFlag = 1)
the firewall is off

tftp directory is avalible and looks set up correctly with the required files (nvlnbp.sys is there)

Any suggestions?