Solved WorldGuard Error

I'm trying to code a skyblock kind of plugin but i get this error in my console:

Code:

[19:40:40] [Server thread/ERROR]: Could not load 'plugins\SkyFactory.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: com/sk89q/worldguard/protection/databases/ProtectionDatabaseException
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:133) ~[craftbukkit.jar:git-Bukkit-33d5de3]
    at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) ~[craftbukkit.jar:git-Bukkit-33d5de3]
    at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [craftbukkit.jar:git-Bukkit-33d5de3]
    at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugins(CraftServer.java:288) [craftbukkit.jar:git-Bukkit-33d5de3]
    at org.bukkit.craftbukkit.v1_8_R1.CraftServer.<init>(CraftServer.java:250) [craftbukkit.jar:git-Bukkit-33d5de3]
    at net.minecraft.server.v1_8_R1.PlayerList.<init>(PlayerList.java:69) [craftbukkit.jar:git-Bukkit-33d5de3]
    at net.minecraft.server.v1_8_R1.DedicatedPlayerList.<init>(SourceFile:14) [craftbukkit.jar:git-Bukkit-33d5de3]
    at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:133) [craftbukkit.jar:git-Bukkit-33d5de3]
    at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:484) [craftbukkit.jar:git-Bukkit-33d5de3]
    at java.lang.Thread.run(Unknown Source) [?:1.7.0]
Caused by: java.lang.NoClassDefFoundError: com/sk89q/worldguard/protection/databases/ProtectionDatabaseException
    at java.lang.Class.forName0(Native Method) ~[?:1.7.0]
    at java.lang.Class.forName(Unknown Source) ~[?:1.7.0]
    at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) ~[craftbukkit.jar:git-Bukkit-33d5de3]
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[craftbukkit.jar:git-Bukkit-33d5de3]
    ... 9 more
Caused by: java.lang.ClassNotFoundException: com.sk89q.worldguard.protection.databases.ProtectionDatabaseException
    at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.7.0]
    at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.7.0]
    at java.security.AccessController.doPrivileged(Native Method) ~[?:1.7.0]
    at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.7.0]
    at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) ~[craftbukkit.jar:git-Bukkit-33d5de3]
    at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[craftbukkit.jar:git-Bukkit-33d5de3]
    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0]
    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0]
    at java.lang.Class.forName0(Native Method) ~[?:1.7.0]
    at java.lang.Class.forName(Unknown Source) ~[?:1.7.0]
    at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) ~[craftbukkit.jar:git-Bukkit-33d5de3]
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[craftbukkit.jar:git-Bukkit-33d5de3]
    ... 9 more
[19:40:40] [Server thread/INFO]: [MultiWorld] Loading MultiWorld v5.2.6

And this is my class:

Code:

package com.skyfactory;

import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.World;
import org.bukkit.block.Block;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.configuration.file.FileConfiguration;
import org.bukkit.entity.Player;
import org.bukkit.event.Listener;
import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.Plugin;
import org.bukkit.plugin.java.JavaPlugin;

import com.sk89q.worldguard.bukkit.BukkitUtil;
import com.sk89q.worldguard.bukkit.WorldGuardPlugin;
import com.sk89q.worldguard.domains.DefaultDomain;
import com.sk89q.worldguard.protection.managers.RegionManager;
import com.sk89q.worldguard.protection.managers.storage.StorageException;
import com.sk89q.worldguard.protection.regions.ProtectedCuboidRegion;

public class Main extends JavaPlugin implements Listener{
    FileConfiguration c = getConfig();
    @Override
    public void onEnable(){
        Bukkit.getServer().getPluginManager().registerEvents(this, this);
        if(c.get("nextisland-x") == null){
            c.set("nextisland-x", 400);
            c.set("nextisland-z", 400);
            c.set("nextisland-region-name", "island");
        }
        saveConfig();
    }
    @Override
    public void onDisable() {
      saveConfig();
      saveRegions((World) Bukkit.getWorlds());
      saveDefaultConfig();
    }
    private static WorldGuardPlugin getWorldGuard() {
        Plugin plugin = Bukkit.getServer().getPluginManager().getPlugin("WorldGuard");
        if (plugin == null || !(plugin instanceof WorldGuardPlugin)) {
            return null;
        }
    
        return (WorldGuardPlugin) plugin;
    }
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args){
        Player p = (Player)sender;
        if(cmd.getName().equalsIgnoreCase("island")){
            if(c.getBoolean(p.getName() + ".hasisland") == true){
                World world = Bukkit.getWorld("thornmc");
                if(world == null){
                    return true;
                }
                if(c.get(p.getName() + ".home.x") == null){
                    int x = c.getInt(p.getName() + ".start-x");
                    int y = c.getInt(p.getName() + ".start-y");
                    int z = c.getInt(p.getName() + ".start-z");
                    p.teleport(new Location(world, x, y, z));
                    p.sendMessage("§bSkyFactory > §7Teleported to your island.");
                    return true;
                }else{
                    int x = c.getInt(p.getName() + ".home-x");
                    int y = c.getInt(p.getName() + ".home-y");
                    int z = c.getInt(p.getName() + ".home-z");
                    p.teleport(new Location(world, x, y, z));
                    p.sendMessage("§bSkyFactory > §7Teleported to your island.");
                }
                return true;
            }else{
                World world = Bukkit.getWorld("thornmc");
                if(world == null){
                    return true;
                }
                int nextislandX = c.getInt("nextisland-x");
                int nextislandZ = c.getInt("nextisland-z");
                Block block = world.getBlockAt(nextislandX, 120, nextislandZ);
                Block block2 = world.getBlockAt(nextislandX, 119, nextislandZ);
                block2.setType(Material.BEDROCK);
                block.setType(Material.GRASS);
                Block b1 = world.getBlockAt(nextislandX, 121, nextislandZ);
                Block b2 = world.getBlockAt(nextislandX, 122, nextislandZ);
                Block b3 = world.getBlockAt(nextislandX, 123, nextislandZ);
                Block b4 = world.getBlockAt(nextislandX, 124, nextislandZ);
                Block b5 = world.getBlockAt(nextislandX, 125, nextislandZ);
                Block bb = world.getBlockAt(nextislandX, 127, nextislandZ);
                Block bb1 = world.getBlockAt(nextislandX, 126, nextislandZ);
                Block b6 = world.getBlockAt(nextislandX + 1, 125, nextislandZ);
                Block b7 = world.getBlockAt(nextislandX - 1, 125, nextislandZ);
                Block b8 = world.getBlockAt(nextislandX, 125, nextislandZ + 1);
                Block b9 = world.getBlockAt(nextislandX, 125, nextislandZ - 1);
                Block b10 = world.getBlockAt(nextislandX + 1, 125, nextislandZ + 1);
                Block b11 = world.getBlockAt(nextislandX - 1, 125, nextislandZ - 1);
                Block b12 = world.getBlockAt(nextislandX + 1, 125, nextislandZ - 1);
                Block b13 = world.getBlockAt(nextislandX - 1, 125, nextislandZ + 1);
                Block b14 = world.getBlockAt(nextislandX + 1, 126, nextislandZ);
                Block b15 = world.getBlockAt(nextislandX - 1, 126, nextislandZ);
                Block b16 = world.getBlockAt(nextislandX, 126, nextislandZ + 1);
                Block b17 = world.getBlockAt(nextislandX, 126, nextislandZ - 1);
                Block b22 = world.getBlockAt(nextislandX + 1, 124, nextislandZ);
                Block b23 = world.getBlockAt(nextislandX - 1, 124, nextislandZ);
                Block b24 = world.getBlockAt(nextislandX, 124, nextislandZ + 1);
                Block b25 = world.getBlockAt(nextislandX, 124, nextislandZ - 1);
                Block b26 = world.getBlockAt(nextislandX + 1, 124, nextislandZ + 1);
                Block b27 = world.getBlockAt(nextislandX - 1, 124, nextislandZ - 1);
                Block b28 = world.getBlockAt(nextislandX + 1, 124, nextislandZ - 1);
                Block b29 = world.getBlockAt(nextislandX - 1, 124, nextislandZ + 1);
                b1.setType(Material.LOG);
                b2.setType(Material.LOG);
                b3.setType(Material.LOG);
                b4.setType(Material.LOG);
                b5.setType(Material.LOG);
                b6.setType(Material.LEAVES);
                b7.setType(Material.LEAVES);
                b8.setType(Material.LEAVES);
                b9.setType(Material.LEAVES);
                b10.setType(Material.LEAVES);
                b11.setType(Material.LEAVES);
                b12.setType(Material.LEAVES);
                b13.setType(Material.LEAVES);
                b14.setType(Material.LEAVES);
                b15.setType(Material.LEAVES);
                b16.setType(Material.LEAVES);
                b17.setType(Material.LEAVES);
                b22.setType(Material.LEAVES);
                b23.setType(Material.LEAVES);
                b24.setType(Material.LEAVES);
                b25.setType(Material.LEAVES);
                b26.setType(Material.LEAVES);
                b27.setType(Material.LEAVES);
                b28.setType(Material.LEAVES);
                b29.setType(Material.LEAVES);
                bb.setType(Material.LEAVES);
                bb1.setType(Material.LEAVES);
                c.set(p.getName() + ".hasisland", true);
                c.set(p.getName() + ".start-x", nextislandX);
                c.set(p.getName() + ".start-y", 128);
                c.set(p.getName() + ".start-z", nextislandZ);
                p.teleport(new Location(world, nextislandX, 128, nextislandZ));
                ItemStack hoe = new ItemStack(Material.WOOD_HOE);
                p.getInventory().clear();
                p.getInventory().addItem(hoe);
                p.sendMessage("§bSkyFactory > §7Island created.");
                p.sendMessage("§bSkyFactory > §7Use your hoe for a higher change of dropping saplings when breaking leaves.");
                p.sendMessage("§bSkyFactory > §7Invite your friends by typing §e/invite <player>");
                p.sendMessage("§bSkyFactory > §7Donate at §ebuy.thornmc.net §7to get more perks!");
                if(p.hasPermission("use.plus")){
                    DefaultDomain owners = new DefaultDomain();
                    c.set("nextisland-x", c.getInt("nextisland-x") + 275);
                    c.set("nextisland-z", c.getInt("nextisland-z") + 275);
                    int regminX = c.getInt("nextisland-x") - 135;
                    int regmaxX = c.getInt("nextisland-x") + 135;
                    int regminZ = c.getInt("nextisland-z") - 135;
                    int regmaxZ = c.getInt("nextisland-z") + 135;
                    Location l1 = new Location(world, regminX, 120, regmaxX);
                    Location l2 = new Location(world, regminZ, 120, regmaxZ);
                    Block minX = Bukkit.getWorld("thornmc").getBlockAt(l1);
                    Block maxY = Bukkit.getWorld("thornmc").getBlockAt(l2);
                    com.sk89q.worldedit.BlockVector minpoint = BukkitUtil.toVector(minX).toBlockVector();
                    com.sk89q.worldedit.BlockVector maxpoint = BukkitUtil.toVector(maxY).toBlockVector();
                    ProtectedCuboidRegion region = new ProtectedCuboidRegion(c.getString("nextisland-region-name"), minpoint, maxpoint);
                    getWorldGuard().getRegionManager(p.getWorld()).addRegion(region);
                    owners.addPlayer(getWorldGuard().wrapPlayer(p));
                     region.setOwners(owners);
                    saveRegions(world);
                    c.set("nextisland-region-name", "island1" + 1);
                    return true;
                }else{
                    DefaultDomain owners = new DefaultDomain();
                    c.set("nextisland-x", c.getInt("nextisland-x") + 275);
                    c.set("nextisland-z", c.getInt("nextisland-z") + 275);
                    int regminX = c.getInt("nextisland-x") - 80;
                    int regmaxX = c.getInt("nextisland-x") + 80;
                    int regminZ = c.getInt("nextisland-z") - 80;
                    int regmaxZ = c.getInt("nextisland-z") + 80;
                    Location l1 = new Location(world, regminX, 120, regmaxX);
                    Location l2 = new Location(world, regminZ, 120, regmaxZ);
                    Block minX = Bukkit.getWorld("thornmc").getBlockAt(l1);
                    Block maxY = Bukkit.getWorld("thornmc").getBlockAt(l2);
                    com.sk89q.worldedit.BlockVector minpoint = BukkitUtil.toVector(minX).toBlockVector();
                    com.sk89q.worldedit.BlockVector maxpoint = BukkitUtil.toVector(maxY).toBlockVector();
                    ProtectedCuboidRegion region = new ProtectedCuboidRegion(c.getString("nextisland-region-name"), minpoint, maxpoint);
                    getWorldGuard().getRegionManager(p.getWorld()).addRegion(region);
                    owners.addPlayer(getWorldGuard().wrapPlayer(p));
                     region.setOwners(owners);
                    saveRegions(world);
                    c.set("nextisland-region-name", "island1" + 1);
                    return true;
                }
               
            }
        }
        return true;
    }
    public static void saveRegions(World world){
    RegionManager regionManager = getWorldGuard().getRegionManager(world);
        try {
            regionManager.save();
        } catch (StorageException e) {
            e.printStackTrace();
        }
    }
}

 

@iClaw check before casting (see my signature). On disable you cast World to a array of worlds,
Is the compile version (of worldguard) the same as the one on the server? Have you put a dependency in Plugin.yml?

 

@mine-care Thank you it works now