I'm not sure if I posted this in the right place. If not, mods feel free to move it. I've been meaning to post this for a long time now. My mom's iMac G4 has been working fine up until about a month after I installed Tiger on it. Her printer, an HP PSC 2510 All-In-One (attached via USB) mysteriously stopped working. As far as I know, it didn't happen after installing an update. I've tried updating HP's software for their printers, which didn't work, so I uninstalled the HP software. I've tried installing via System Preferences as well. However, now the printer is attached to the network since there's several computers using it (which all work fine). When trying to add the printer, I get: "An Unknown Error occured when trying to add the selected printers. Error 13" She's running Tiger 10.4.3, 800MHz iMac G4 with 512 RAM, if it helps The printer is an HP PSC 2510 It'd be great to get this fixed as she's growing very frustrated without a printer. Thanks!!!