My HP LaserJet 1200SE wasn't printing. It turned out that the USB cable was loose inside the printer, where it connects. Before I figured that out, I reinstalled several times, rebooted, and added the HPLasetJet 1200 patch. Now I can print, but before each printing job I get a printed message that says, "PCL XL Error. Subsystem: KERNEL. Error: IllegalStreamHeader. Operator: 0x0. Position: 0. What does this mean and how can I fix it? I'm using Windows 98SE. When I reinstalled, I wasn't sure which port to indicate. When I set it at USB, the printer didn't appear in Control Panel when I rebooted, even though I could see the files with Window Explorer. I now have the port at DOT4_001 and I'm able to print, but I'm getting that new error message. I don't know if the port is the problem or not.