I'm going to ask you to reset your printer settings in Firefox. The steps may be unfamiliar, but it's not difficult.

First, press Ctrl+t to open a blank tab, type about:config in the location bar, and press Enter. Click the button promising to be careful.

Second, in the Filter box, type printer and wait a moment until the list is filtered.

Third, find print.print_printer, right-click it, and choose Reset. Then test again.

If you have more than one printer, you could also try switching between then in the Print dialog.

Any luck?

hey brother...IT WORKED!!!! thanks very much!!!

Thanks , it worked!! Was getting very frustrated with the same problem.