So I am using LibDisguises to make a plugin for a server. Here is my code: Code (Text): package me.diyar.gmodgun; import java.util.ArrayList; import java.util.List; import org.bukkit.Bukkit; import org.bukkit.ChatColor; import org.bukkit.Material; import org.bukkit.command.Command; import org.bukkit.command.CommandSender; import org.bukkit.entity.Player; import org.bukkit.inventory.ItemStack; import org.bukkit.inventory.meta.ItemMeta; import org.bukkit.plugin.java.JavaPlugin; import me.libraryaddict.disguise.DisguiseAPI; import me.libraryaddict.disguise.disguisetypes.PlayerDisguise; public class GModGun extends JavaPlugin { public void onEnable() { Bukkit.getServer().getPluginManager().isPluginEnabled("LibsDisguise"); getLogger().info("[1.8] Plugin made by Diyar! Make sure you have LibsDisguise!"); getConfig().options().copyDefaults(true); saveDefaultConfig(); } public void onDisable() { } public boolean onCommand(CommandSender sender, Command cmd, String label, String args[]) { if (cmd.getName().equalsIgnoreCase("gmod")) { if (!(sender instanceof Player)) sender.sendMessage(ChatColor.GRAY + "You must be a player!"); if (!(sender.hasPermission("gmod.toggle"))); sender.sendMessage(ChatColor.translateAlternateColorCodes('&',getConfig().getString("no-perms"))); }else if (args.length == 0) { Player p = (Player) sender; sender.sendMessage(ChatColor.translateAlternateColorCodes('&', getConfig().getString("GMod-Mode"))); ItemStack Gun = new ItemStack(Material.WOOD_HOE); ItemMeta meta = Gun.getItemMeta(); List<String> lore = new ArrayList <String>(); lore.add("The almighty gun of Garry's mod!"); meta.setLore(lore); meta.setDisplayName(ChatColor.GRAY + ChatColor.BOLD.toString() + "PhysGun!"); PlayerDisguise pd = new PlayerDisguise("forgottenclaw"); DisguiseAPI.disguiseEntity(p.getPlayer(), pd); p.getInventory().addItem(Gun); }else if (args.length > 1) { sender.sendMessage("You can not give another player this gun!"); } return true; } } Config.yml Code (Text): # Do not edit these hashtags or the config will crash! # You can edit these messages! # Plugin made by Diyar! no-perms: Sorry... You do not have access to this command! gmod-mode: You are now in GMod Mode! Plugin.yml Code (Text): main: me.diyar.gmodgun.GModGun name: GModGun version: 1.0 commands: gmod: description: Use this to get the almighty PhysGun! I get red underlined by the PlayerDisguise and DisguiseAPI, it tells me to import and that's what I do but it does not work, https://gyazo.com/39a7cb57811cd485654f6e41b5f0fd8c
If it's a local jar, did you by chance delete it from your system accidentally or maybe move where the jar is located?