I've recently started to try mods in Minecraft. I have had no problem doing it, But recently I have tried loading up forge and it gave me "Error! Unable to start game." Like I said I had no trouble in the past. So I thought I needed to download the version of Forge again. When I did however It didn't appear. I then realized that I needed to delete the version of Forge, Simple, But, It wouldn't let me delete the version of Forge. I want help on how to work this. Especially since I wanna get into mutiplayer with mods with friends.