Hi Ivivanov,
Thanks for your help. I just looked at the /etc/hosts.allow and the /etc/hosts.deny files on the source server and neither of them contain any entries in them at all. Do I still need to edit both these files as you suggest? I'm running Converter Standalone on the same machine that vCenter is running on. The subnet of the source server and the subnet of the vCenter/Converter server and the subnet of the helper VM is all on the same subnet. I tried running the conversion job with the helper VM set to obtain a DHCP address and again using a fixed address, but both times it failed exactly the same way at the same point as I describe in my first post.
George.