Maybe try a capacitor on the clock line to ground? That gave me a hell of a time with my one programmer and ICSP. I was able to erase and read the PIC but not write to it. It would give me a bunch of verify errors. Maybe something to look at? Cheers MJ Brush -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads