PDFCreator Server only running when user logged in

Hey guys,

I'm sorry if this theard always exists, but I could not find any solution anyway.

I've installed PDFCreator (Version 1.2.1) as server installation and made a service with srvany.exe. The service is running (tested with local system and service-user), but the PDFs are created only if a user is logged in.

Has anyone an idea for me?