[Samba] Samba 4.0.5 git. Printer sharing broken?

[steve]

On 27/03/13 12:09, David Disseldorp wrote:
> Hi Steve,
>
> On Wed, 27 Mar 2013 11:18:32 +0100
> steve <steve at steve-ss.com> wrote:
>
>> windows says 'Access is denied' when trying to install the printer
>> driver. I have opened 631 on the DC for CUPS and also tried without any
>> firewall.
> Please ensure that the user attempting to add the printer driver has
> been granted SePrintOperatorPrivilege:
> # net rpc rights grant <user> SePrintOperatorPrivilege
>
> Cheers, David
Hi David

I tried:
# net rpc rights grant Administrator SePrintOperatorPrivilege 
-UAdministrator
Enter Administrator's password:
Successfully granted rights.

I now try and print something. The file appears the queue as 'printing' 
but then changes to 'printing error'. Nothing prints.

Any ideas?
Cheers,
Steve