vCenter Server 5.1.0 VA NTP

Hello,

I just deployed a vanilla instance of vCenter Server 5.1.0 VA using an embedded DB. I am unable to enable NTP on the vCenter VA by following the instructions here: http://pubs.vmware.com/vsphere-51/topic/com.vmware.vsphere.vcenterhost.doc/GUID-FE79F045-BEB0-4FE5-B19D-4F4B3BE4663D.html

I issue the following command: yast2 ntp-client add server=4.2.2.2

I receive the following: Error:
Cannot update the dynamic configuration policy.

Any idea on how to resovle this?

--

Jacob