I just released 4.0.2, which fixes this and a few other issues. Harald At 08:44 02.02.2006 +1000, you wrote: >Change the line: > >#include <avr/signal.h> > >to: > >#if __AVR_LIBC_VERSION__ < 10400UL >#include <avr/signal.h> >#endif > > >Henrik >http://www.proconx.com