Ok, I need the converter-agent log from machine you trying to convert.
I see error 3 (The system cannot find the path specified.)
2014-02-17T14:14:42.645-07:00 [01980 info 'Default'] Error 3 opening disk ha-nfcssl://[ESX1-DATA] Camnet-Exch.camnet.local/Camnet-Exch.camnet.local.vmdk@CAMNET-ESX1:902!52 93 e1 ec 67 dc ce f2-64 f8 ca 6d 1d 3c c9 94.
Could you verify your access to CAMNET-ESX1 at port 902 from the machine where the Converter is installed?
Also try to run the Converter UI 'as administrator' and try again.
HTH