Lexmark Z617 Problem

[gamer64]

Hey, i just installed my Lexmark printer on Kubuntu, using This Guide, And the drivers have installed and everything, but the printer doesn't print. So i restarted kubuntu, but the same happens, so i pop into admin mode, and check the print jobs, only to find that it says "Error" So i check the IPP report, but i can't see anything, can anyone help?

Also, my IPP report is:

[ATTRIBUTE]

job-more-info
ipp://localhost:631/jobs/4
job-preserved
True
job-printer-up-time
Thu May 8 17:00:26 2008
job-state-reasons
job-stopped
job-uri
ipp://localhost:631/jobs/4
printer-uri
ipp://localhost/printers/LexmarkZ600
job-originating-user-name
Liam
job-name
Osmosis (Biology)
document-format
application/postscript
PageSize
A4
job-priority
50
job-uuid
urn:uuid:ca5649a5-21ab-35b8-72d6-146451954074
job-originating-host-name
localhost
time-at-creation
Thu May 8 16:52:12 2008
time-at-processing
Thu May 8 16:52:12 2008
time-at-completed

[VALUES]

job-id
4
job-state
0x6
job-media-sheets-completed
0
job-printer-uri
ipp://Kubuntu:631/printers/LexmarkZ600
job-name
Osmosis (Biology)
job-k-octets
32
job-hold-until
no-hold
job-sheets
none
none
job-printer-state-message
Starting GPL Ghostscript 8.61...
job-printer-state-reasons
none