Minecraft A Java Exception Has Occurred

I have a cracked Minecraft account. I updated the launcher so I would be able to play 1.7.2 but ever since, whenever I try to play, no matter what version I choose, the message "A Java Exception Has Occurred". I have tried to re-install Java many times but there's no change. Any ideas? Does anyone know a good cracked launcher that will run 1.7.2 for me without any Java errors?