Have you turned on your system console and checked for Python errors? If you are on Windows then you can open the console window from the “Window” or “Help” menu (depending on Blender version). If you are on Linux/OSX then you need to open a command line and launch Blender from that to get the console output.
you dont even have aim.py in the blend file, and no bricks linked to aim.py, so to fix it you should: at the aim.py and the needed bricks
on your objects