I haven't ever used UPD before. I installed a new printer using the UPD b/c I couldn't find a regular driver. Its working fine.

So I wanted to see if the UPD would help an HP 4050 print faster on pdfs. In Imanager I associated the UPD driver to the HP4050 (I installed that UPD as a driver for a HP 4015), but I figured its Universal right?

On the test computer I Installed the HP 4050 with the new UPD driver. Everything works perfectly EXCEPT when I print a pdf, it shows up in the print que, then says it printed successfully, however nothing comes out of the printer. Also Its not like it is hung, b/c I can immediately print a non pdf to the same printer.

Please help, I'm clueless.