ok, here's the story: =) Cups got automatically installed on my server, when installing samba. So far so good. But then I always got the "Unable to convert...." messages. I searched the forums and found the suggestion to update ghostscript, but ghostscript wasn't even installed on my server!! After emerging ghostscript, unmerging cups and re-emerging cups everything works fine using the same config as before. Therefore I suggest putting ghostscript in the dependencies of cups. Greets Matt
Done. Thanks!