Echo_The_Lord

Hi there for the past couple of days I've been attempting to figure out what was wrong with my Minecraft as one morning i was unable to play so one by one i took out a mod from my folder trying to find the problem and i kept on trying to find out what went wrong. this is the error - java.lang.IndexOutOfBoundsException eventually i noticed(after i took off all the mods) when i had forge enabled it only said 3 mods in the bottom left corner so i clicked onto the mods tab and i noticed the Mod which is called minecraft isn't there! i have no idea how to fix this any help would be much appreciated. PS I'm on a MAC