Getting error, a general system error occurred: unknown internal error

Hi Folks,

Am converting a DMZ server and am getting "a general system error occurred: unknown internal error" just as im clicking finish on the VM converter.

I have followed this KB and have opened up the ports on the firewall to the VSphere host server, do i need to open the same ports on the VMHOST server as well?

http://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&docTypeID=DT_KB_1_1&externalId=1012382#

thanks