I installed the Beta of Gutsy and had a similar problem.
It seems that the new tool for automatic installation of printers is somehow buggy. The printers in some cases are recognised correctly, BUT they are assigned to a bad device URI. In my case for example ( I own a HP Deskjet 5940), the printer was given a URI:
It would only collect jobs, without my being able to delete any of them, but it would never print! The solution was to use the printer settings (either on Ubuntu Gutsy: System --> Administration --> Printing or on Kubuntu Gutsy: Peripherals --> Printers) and make the system search again for printers on usb ports. Then the printer was given automatically the correct URI:
I installed the Beta of Gutsy and had a similar problem.
It seems that the new tool for automatic installation of printers is somehow buggy. The printers in some cases are recognised correctly, BUT they are assigned to a bad device URI. In my case for example ( I own a HP Deskjet 5940), the printer was given a URI:
"hp:/usb/ Deskjet_ 5900_series? serial= CN5771W0FH047H" .
It would only collect jobs, without my being able to delete any of them, but it would never print! The solution was to use the printer settings (either on Ubuntu Gutsy: System --> Administration --> Printing or on Kubuntu Gutsy: Peripherals --> Printers) and make the system search again for printers on usb ports. Then the printer was given automatically the correct URI:
"usb:// HP/Deskjet% 205900% 20series? serial= CN5771W0FH047H"
and it started working.
I didn't find a similar comment on launchpad and decided to add mine. I hope it helps.