Been trying to find a working "filterless" driver for Mac OS X Lion to
upload to our OES2 SP3 iPrint Server. The 3.11 and 3.12 PPD drivers I've
tried from HPLIP give me the error that "The filers specified in the PPD
could not be found." We primarily have HP P2055dn and 4015x printers that I
need the driver for and for some Xerox copiers. So far, I've been
unsuccessful trying to get this working.