Hi everybody Many thanks to all the developers of GPUTILS. This a great tool, and I wish it support more recent devices. I discovered that the DEBUG bit of CONFIG2H register is missing for PIC18F24Q10 (and other devices of the same family). Symptoms : The CONFIG directive fails when you mention this bit (ie: CONFIG DEBUG=OFF (or ON) is rejected). Everything seems to work fine when you don't mention this bit. In the latter case, the default value is assumed. Fix: The problem comes from the gputils/libgputils/gpcfg-table.c...