Hi, Would greatly appreciate some advice. Hp printer that used to work fine is now not working properly with regard to the computer (Mac OSx) Printer by itself photocopies and scans, but when I try to send something to it from the computer I just get 'error' on the printing status. Also I can't open the printer utility. Tried all the usual uninstall, reinstall, reset printing system, unplug stuff. What could be wrong????