> If I do this, then the "active" LED on the PICSTART flashes > for a fraction > of a second, but nothing else seems to happen. The bulk erase occurs very quickly, so the LED flashes so quickly I often don't even notice it. After you erase the chip, click the "Blank" button to verify that the chip was erased successfully. If it does not report "Device is blank," try another chip. If it still doesn't erase, start checking errata sheets. Jen -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.