samba - May 2013 - broken printing 4.0.5

Hi everyone
I'm still stuggling with this
https://bugzilla.samba.org/show_bug.cgi?id=9745

I've now reproduced the bug with openSUSE and Ubuntu DC's, on w7 and xp 
clients. It seems that Samba is not looking in the correct directory for 
the printer drivers, which windows has copied to the correct directory 
on the DC.

Does anyone have printing working on 4.0.5 using the method in the wiki? 
If so, could you share?
Cheers,
Steve