error VMware converter 5.0 will crash when using vCenter 5.1 as destination

This has been an issue since vsphere 5.1 was released.
Vmware converter 5 will crash is the destination if the destination is a vsphere 5.1 host

The current work around until a new version of vmware converter is that you need to use vmware converter 4.3  or 4.
The vm will come up with virtual hardware 4.
Just update the virtual hardware manually for the virtual machine when the conversion is done and you should be in business.

http://communities.vmware.com/thread/417661?start=30&tstart=0



edit:
11-01-2012
vmware released converter 5.0.1 which fixes the issue
http://sparrowangelstechnology.blogspot.com/2012/11/vmware-converter-501-released.html