Converting Linux P2V to ESXi 5.5 with Vmware Converter 5.5 fails on 1% almost immediately

Hi,

When trying to convert a physical Linux host to the Vmware ESXi 5.5 server I get an error almost immediately after the start of the conversion, when trying to convert a windows physical machine to the ESXi server there is no problem.

Anyone any ideas or suggestions ?

Here is the exact error :

[task,379] [task-12] -- ERROR -- Convert: vmodl.fault.SystemError

--> (vmodl.fault.SystemError) {

-->    dynamicType = <unset>,

-->    faultCause = (vmodl.MethodFault) null,

-->    reason = "DiskLib_Open failed on ha-nfcssl://[datastore1] plop/plop.vmdk@192.168.1.2:902!52 ed 90 da 52 33 dc a5-da b7 41 b5 92 22 3c 2d with error One of the parameters supplied is invalid.",

-->    msg = "",

--> }

Thanks in advance

Regards