Why can't I get a standalone to work right?

Whenever I try to publish a game as a standalone, it doesn’t turn out the way it’s supposed to. It always shows every frame. This is what it looks like when I publish a game as a standalone:
[17389-death+wave+glitch.png|17389]

There is really about two or three zombies, but when I run the game, it shows every frame and not one at a time. That makes it look really weird and it doesn’t do this with a web player.

It’s working now! I guess it was either my operating system or the version of Unity since I have updated them both since the problem.