Hey guys so yesterday I was trying to install autoswitch for my minecraft with auto installer after I tried opening my game it wouldn't open I get the error message. I think it happened because I followed a tutorial saying to make the minecraft.jar file a .zip then extract everything than drag every .class file in after that that's when I got the error it'll ask if I wanted to update first though so please help!
Minecraft fatal error 4! PLEASE HELP!