Should be network problem, I hope temporary, the NFC errors begins with the following message:
2015-09-25T18:06:06.172+08:00 error vmware-converter-worker[04840] [Originator@6876 sub=task-1] VimConnectionHelper Keepalive to host 192.168.4.38 failed: An existing connection was forcibly closed by the remote host
Try to configure only your destination VM
HTH