Minecraft Forums

So I downloaded Hexxit and have been having a great time playing it. It asked me to update, so I did. When it started up it said there was an error, that there were duplicate files. I tried to manually delete the extra files. But it wouldn't let me claiming the files were open in Java(TM) Platform SE binary. I searched my computer for this thing keeping the files open, and I can't find it. I just need some help to solve this problem. If anyone has any ideas what is wrong please help me.