First thing to do to overcome this issue is run the software as Administrator. Right-click its icon and choose Run as Administrator then disable the setting and reboot the PC. Then, connect the camera and check its behavior. Secondly, go to Start > Run > msconfig and switch to Startup. Locate PHOTOfunSTUDIO in the list and uncheck it. Reboot the PC again and repeat the procedure (connect the camera, etc). You will see now that it's not running anymore, and the auto-launch is disabled.