Make sure you only have the .json and .jar files in your .minecraft folder. Sometimes modified clients come with a installation tutorial and it messes up getting the client in to your Minecraft.
I know what your problem is @PingPongGamer. With "eximuis when u go into your armourstatus in .minecraft. You have recently deleted or added a friend on config 1. U need to delete the spaces between each friend, then save and run the client.
Okay, 1.Go to you're .minecraft folder 2. You should see a folder/notepad called amourstatus click that. 3. Go to config 1/3 (can't remember which 1 ethier 1 or 3) add friend there.