We have the same issue, but I'm REALLY sure it's the game's files that has a problem. It's in the folder for ren'py in 'lib' there's nothing there! I wanna play it too! :(( Have you tried disabling your anti-virus?
Are you still having problems? It's possible your computer's virus scanner isn't allowing the game to work right. If you have a firewall/virus scanner can you try turning that off while downloading/installing/launching or try to tell the program the file is safe?
