Failed to download file, the file contents differ from what was expected. Name: jopt-simple-5.0.3.jar URL: https://libraries.minecraft.net/net/sf/jopt-simple/jopt-simple/5.0.3/jopt-simple-5.0.3.jar Filename on disk: jopt-simple-5.0.3.jar Path: C:\Users\aaron\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\5.0.3\jopt-simple-5.0.3.jar Exists: File
Thats what is says!! HELP!! (Im new)