Create PDF with BullZip in NAV2013

Hi all,
i try to create a PDF Process "Server Side" in NAV 2013. I want to merge the invoce with another PDF by using Bullzip.
At first i have converted the code from Rashed (http://mibuso.com/blogs/ara3n/2008/08/01/save-nav-reports-to-pdf/) to .net.

When i start my Codeunit, the BullZip Promt is displayed, however i set "Showsettings" to "never".

I think, BullZip dosen't look to the "Runonce.ini", if it was started from the Service-Tier.
Any idea ?

Thank you for any help.