CUPS-Server-Error

[Dirk Tamme]

Hi,
I've installed Ubuntu 7.10, mainboard Gigabyte GA-P35-DS3L, with a Samsung SCX-1150F as standard printer. When I want to print a test page (with GNOME) I get 
CUPS-Serverfehler client-error-document-format-not-supported

..and when I want to print a simple ASCII text, nothing comes out.
The printer works with Windows XP.

What can I do to get my printer working??

Thanks for any help
Dirk T.