I have also tried all barcodes available on the item property with all labels available in the label wizard with generic/text driver, printing on my HP laser jet, and no barcodes have been printed.
Also, a separate font issue: fonts have been installed, but the generic printer doesn't seem to recogize it. When using "label design", for one field on the label such as "price", and clicking on "A" for font, I got a message:"No font installed, go to control pannel to install font".......