Trying to export Boot camp volume as a VM

I'm running VMWare Fusion 5.0.4, running my bootcamp partition as a VM.

I want to export that partition to run as a VM on another machine.

I'm using VMware vCenter Converter standalone 5.5.2 to try to do this.

Unfortunately the conversion fails with: "Cannot mix MBR and GPT partitions, partition 0 is GPT!" in the logs.

What can I do?

Thanks,

Tom