[10:32:00] [Server thread/INFO]: AlanGreyjoy issued server command: /is create
[10:32:00] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'is' in plugin IslandWorld v3.5
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot.jar:git-Spigot-1371]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:180) ~[spigot.jar:git-Spigot-1371]
	at org.bukkit.craftbukkit.v1_7_R2.CraftServer.dispatchCommand(CraftServer.java:719) ~[spigot.jar:git-Spigot-1371]
	at net.minecraft.server.v1_7_R2.PlayerConnection.handleCommand(PlayerConnection.java:984) [spigot.jar:git-Spigot-1371]
	at net.minecraft.server.v1_7_R2.PlayerConnection.a(PlayerConnection.java:829) [spigot.jar:git-Spigot-1371]
	at net.minecraft.server.v1_7_R2.PacketPlayInChat.a(PacketPlayInChat.java:28) [spigot.jar:git-Spigot-1371]
	at net.minecraft.server.v1_7_R2.PacketPlayInChat.handle(PacketPlayInChat.java:65) [spigot.jar:git-Spigot-1371]
	at net.minecraft.server.v1_7_R2.NetworkManager.a(NetworkManager.java:148) [spigot.jar:git-Spigot-1371]
	at net.minecraft.server.v1_7_R2.ServerConnection.c(ServerConnection.java:77) [spigot.jar:git-Spigot-1371]
	at net.minecraft.server.v1_7_R2.MinecraftServer.v(MinecraftServer.java:703) [spigot.jar:git-Spigot-1371]
	at net.minecraft.server.v1_7_R2.DedicatedServer.v(DedicatedServer.java:273) [spigot.jar:git-Spigot-1371]
	at net.minecraft.server.v1_7_R2.MinecraftServer.u(MinecraftServer.java:566) [spigot.jar:git-Spigot-1371]
	at net.minecraft.server.v1_7_R2.MinecraftServer.run(MinecraftServer.java:472) [spigot.jar:git-Spigot-1371]
	at net.minecraft.server.v1_7_R2.ThreadServerApplication.run(SourceFile:618) [spigot.jar:git-Spigot-1371]
Caused by: java.lang.NoClassDefFoundError: com/sk89q/worldedit/world/storage/InvalidFormatException
	at pl.islandworld.IslandWorld.scheduleRebuild(IslandWorld.java:976) ~[?:?]
	at pl.islandworld.IslandWorld.onCreate(IslandWorld.java:2011) ~[?:?]
	at pl.islandworld.commands.Island.commandCreate(Island.java:414) ~[?:?]
	at pl.islandworld.commands.Island.onCommand(Island.java:81) ~[?:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot.jar:git-Spigot-1371]
	... 13 more
Caused by: java.lang.ClassNotFoundException: com.sk89q.worldedit.world.storage.InvalidFormatException
	at java.net.URLClassLoader$1.run(URLClassLoader.java:366) ~[?:1.7.0_51]
	at java.net.URLClassLoader$1.run(URLClassLoader.java:355) ~[?:1.7.0_51]
	at java.security.AccessController.doPrivileged(Native Method) ~[?:1.7.0_51]
	at java.net.URLClassLoader.findClass(URLClassLoader.java:354) ~[?:1.7.0_51]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) ~[spigot.jar:git-Spigot-1371]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[spigot.jar:git-Spigot-1371]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:425) ~[?:1.7.0_51]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ~[?:1.7.0_51]
	at pl.islandworld.IslandWorld.scheduleRebuild(IslandWorld.java:976) ~[?:?]
	at pl.islandworld.IslandWorld.onCreate(IslandWorld.java:2011) ~[?:?]
	at pl.islandworld.commands.Island.commandCreate(Island.java:414) ~[?:?]
	at pl.islandworld.commands.Island.onCommand(Island.java:81) ~[?:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot.jar:git-Spigot-1371]
	... 13 more