Hi Jen >The bulk erase occurs very quickly, so the LED flashes so quickly I often >don't even notice it. That sounds familiar... >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. Tried it with 400 :-) > If it still doesn't erase, start checking errata sheets. I'd better! Thanks Alan -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.