Guest Customization not working?

Running: ESXi 5.1.0, 1021289, vCenter 5.1.0b.

I created a new specification in "Customization Specification Manager" and applied it to a VM during a template deployment of Windows 2008 R2.

The administrator password specified in the spec is not working.

Prior to creating the template, windows was activated with enterprise license.

Tried multiple times..

any ideas?

Thanks.