to Larry P. Thomas WA0GWA I've the same problem b4. I send the OTP of PICc54 to oversea. It turn out not working even though i tested it many times in my work bench. My friend that took it over have the project scan under the X-Ray i think?... The second time i asked him to take out the chip from the X-Ray. IT's ok then. I did't take the effort to test another chip on the X-ray but u can try.. regards fook kong