use previous version 2.3 or lower, version 2.5 acts up more often, not to sure why its the exact same but with a few new features. Restart The program in Admin mode. If it fails to work (2.5) revert back to using 2.3. If it dosnt work on windows 7, uninstall s4 league (completely) reinstall it, (reupdate it), and by reinstall i mean reinstall via redownloading the game installer.exe onto your pc then reinstalling from that, and then updating. After that then retry the hack. This is how you resolve the windows xp (not working) issue. Works on Xp SP3, Vista Home premium, pro, and ultimate (32/64bits), Windows 7 (Home Premium, Pro, Ultimate) 32/64bit versions. DOSE NOT WORK on windows 7 NETBOOK EDITION