I just tried to log onto League of Legends and my virus scanner popped up with a "Malware detected" warning. I had logged on a few hours earlier without this problem, but my virus scanner is now claiming there's some virus and it wont let me log in. Below is a screenshot of the error message. Is there really a virus or is my AVG freaking out due to something in the patch? (which it has before)

It's popping up when I hit the PLAY button on the launcher, and I am currently using the new version of the launcher.

This is a false positive. There is no virus or malware within the game.