When I launch Minecraft with the newest snapshot (with Twitch integration) 13w47e, my launcher closes and then re opens. Minecraft never launches.

Put the summary of the bug you're having here

What I expected to happen was...:
Minecraft snapshot 13w47e would launch normally.

What actually happened was...:
It just re opened the launcher, and I got a Norton 360 security alert telling me it wasn't safe, and that it uninstalled.

Steps to Reproduce:
1. Have a computer with Norton 360 installed.
2. Activate the new Minecraft snapshot
3. A Norton alert will come up saying it is not safe and that it uninstaled it