[Samba] cups driver

[stenon]

hi,

it's almost good !

i can add new driver and it's uploading in my $print share on my samba 
server
but when i want to save my change ...
"printer configuration connot be saved, access denied"

so i have change access on my directory /var/lib/samba/printers ... nothing

where could i see my access denied ? which directory is it ? because 
logs are empty

thanks ...