Going out on a limb and guessing this is an HP printer. HP drivers are notoriously bad. (I quit buying HP printers years ago due to driver problems). You may be able to use a driver with an older PCL version or a generic HP driver.

>One of our customers keeps intermittently receiving Error 1958, Error Loading Printer Driver. I keep tearing my hair out on the same interval.
>
>It can happen a couple times a day, printing successfully for hours and suddenly throw the error. In most cases, exiting and restarting the .EXE allows it to load and print.
>Printer is on the network and set as Default printer, but even if the printer selection window is invoked and the printer selected, the error may still occur.
>
>Googling found mention of spaces in the printer name causing this, but those were removed and the error still occurs.
>
>Please help?
>
>Chris.