Same error message here with a LaserJet 1120n on karmic, connected through LAN:
hp:/net/HP_LaserJet_M1120n_MFP?ip=192.168.1.200
Printing works fine.
Same error message here with a LaserJet 1120n on karmic, connected through LAN:
hp:/net/ HP_LaserJet_ M1120n_ MFP?ip= 192.168. 1.200
Printing works fine.