I can't believe there is any kind of network issue because all of my VM's are working and on the network.
I am running version 6.1.1 and have tried three different ESXi servers. Two are 5.5 and one is 6.0 servers and they all fail. I have also tried this on another PC that fails.
I have also tried different VM's to import. I took one of the VM's and converted it on my PC from one drive to another drive and that works telling me the VM isn't the issue.
I found one article on the web from VMware Converter: "The operation experienced a network error" - discussing the network error issue but said it was something else that he got around.
The other strange thing it does, the progress bar gets to 50% and then speeds up to 98% and then goes back to 6% where it fails.
I have attached the log files from one of the tests.
Thanks