Embedded programming

So far this lesson I have downloaded crosspack AVR. Then I tried to upload one of the sample sketches on to my board. However I had many errors. Finally I managed to set the fuses. Strangely after that I could not download the program. The error
Since then I have managed to program hello hbridge boards and many other boards. I have reprogramed the Hbridge boards to turn on when a button is pushed. I modified the code for the Light sensor to remove the "framing" because it was messing up my application.