Hello, I had the same issue that you have reported. I have been able to print thanks to your suggestion about the symlink for pstoraster and the copy of the hpgltops filter (taken from ubuntu 10.10 cups deb package).
I've been digging a little inside the cups project, i.e., forums, bugs, logs, changes, and svn (cups-1.6svn-r10126-source) and it seems that newer versions do not have those filters anymore. The work has been transfered from cups (I think) to the openprinting project, but this team has not put the filters into their code yet. I do not know if the HP filter (hpgltops) would go to the hplip project, though. -- Salutacions, Josep
