Hot Add using VDDK on Ubuntu when copying vmdk disks

We get this message not allowing hot add transport when using Linux vddk

2011-10-19T16:06:32.045-04:00 [7F1BC2F46720 error 'Default'] Cannot use advanced transport modes for 172.31.39.1/moref=vm-44/moref=snapshot-48: Snapshot with MoRef "moid=snapshot-48" does not belong to Virtual Machine with MoRef "vm-44"..

diskLibPlugin: 2011-10-19T16:06:32.045-04:00 [7F1BC2F46720 error 'Default'] Cannot use advanced transport modes for 172.31.39.1/moref=vm-44/moid=snapshot-48: Snapshot with MoRef "moref=snapshot-48" does not belong to Virtual Machine with MoRef "vm-44"..

Questions:

For connections should we say "moref=snapshot-48" or just "snapshot-48" as in our Init code as shown below:

      cnxParams.vmxSpec = "moref=vm-44";
      string srcSnapshot = "moref=snapshot-48";

We really need to be able to use the advanced transport modes!

thanks,

Kris Dines