Safari 7.0 won't open and gives error -600 (Mavericks)

I found a YouTube video that showed how to prank someone with a script the kills an application every time it's opened. I typed the script in and ran it. It worked for a few seconds. After running the script The Safari icon on the dock was bouncing continuously. I put my macbook to sleep and shortly after woke it back up. The safari icon stopped bouncing but when I try to open safari it does nothing. When I click on Safari in the applications menu in finder it gave the error -600. How do I fix this?