Octavio Nogueira wrote: > > Try to see if the crystal is working. If isn't > you will get this message. > > Friendly Regards > > Octavio Nogueira Or use the build in RC osci to test. But not just that. I get this error on also if the code in the F87x and editor don't match, also after changing config bits and not reprogramming, etc. Another suggestion to the problem could be that you use the registers and program space reserved for ICD. Check your ICD help file to see that you do not use the ICD resources. Quentin