Hi. I recently began using this software and had the same problem. When you are finished adding your devices in Webbot Project Designer, go to Tools at the top and click "Generate." Then another box will appear and select marquee for both selections. In addition, this box has a place to check that says "create avr project file." Make sure it is checked. Then search your computer for the file with the name you chose that ends with something like .prj or something similar. Look at the file path so that you know where it is. When you are adding existing source code in AVR Studio, look for that file in the location that you saw in the file path. The C file should be right there. Do the same thing with the H file. Then after adding the proper directory and libraries as the tutorial shows, you are ready to do a rebuild all. Then compile it. Now search your computer for the file name you chose that ends with .hex. That is the file you want to upload to your micro. I hope this helps.