Re: FAILED: An error occured while opening a virtual disk. Verify that the Converter server and the running source machines have a network access to the source and destination ESX/ESXi hosts

Your error is:

2014-08-18T06:49:12.641+02:00 [10064 warning 'Default'] [,0] [NFC ERROR] NfcNewAuthdConnectionEx: Failed to connect to peer. Error: Failed to connect to server cld01vmwh18.replycloud.prv:902

Need to allow access from machine to be converted to cld01vmwh18.replycloud.prv:902

HTH