So if I understand correctly, you are cloning a VM from under ESX to WS? What are the ESX version and the Player version?
Generally, what converter does in this case is just copy the vmdk files, assuming the virtual hardware should work. There is something unusual in this case. Can you share some more info about the machine configuration - what kind of disks are there - IDE, SCSI, RAID?
The message "stat /proc/bus/usb/devices: No such file or directory" looks strange to me. I suppose there are no boot or system partition on USB disks. Only locally attached disks are being converted.
If it were P2V I would suppose there could be some missing module or some misconfiguration of the initrd. In case of V2V this should not be the case, but if nothing helps, you could try rebuilding the initrd image on the destination VM (e.g. by booting from a live CD)