Unless this question is related to your other one, you could clone the virtual disk from the command line and then create a new VM using the cloned virtual disk. To do this create a new folder on the datastore and run the following command from the host's command line.
vmkfstools -i /vmfs/volumes/<datastore>/source-vm/snapshot-00000x.vmdk /vmfs/volumes/<datastore>/target-vm/clone.vmdk
In case the source snapshot is not the VM's active snapshot, you can run this command with the VM powered on.
André