I have been working through smileys book and in the PC_Comm project I forgot to do the 'Make Extcoff' after the 'Make All' in winavr.
After that I loaded AVR studio and as I couldn't find PC_Comm.cof I opened PC_Comm.hex and programmed the butterfly with that.
Now when I try to load a new hex file I get the message 'No supported board found' even though I have turned the butterfly off and on and press and hold the joystick while I click on 'AVR prog'
Have I mucked up the bootloader?
it was working perfectly for all the previous projects in the book.