Canon iR-ADV C5540 with Fiery and Uniflow

[gaudin]

Hi,

i have some Trouble with a Canon iR-ADV C5540 (+ Fiery ) & Uniflow.

We have ~200 Canon Devices with Uniflow working fine, but there is one with a fiery Controller.
Direct Print works fine with the Fiery.
Uniflow is installed and my secure-print Jobs are listed on Screen, but when i try to print nothing happends.
The Job is gone, but the Printer is empty.

Hope for some help.
Greetings