HP DeskJet 1200C: this driver, unless it has been updated by HP, will not handle Solar Fire v3's SOLFIRE fonts locations 0128 and 0129 (Aries and Taurus glyphs). Solar Fire usually crashes at printout time. There is no known cure. But if the 1200C can use an installed 550C driver, it might print. Otherwise, in the final analysis, to print with Solar Fire, you may have to procure another DeskJet printer model of which all, but the 1200C, are currently printing fine. Best recommendation: contact Astrolabe for Solar Fire v4 upgrade information.