[Problem] Bukkit

[SrNegro]

Witam , mam problem gdy odpalam serwa pisze mi :

[color=#FFFFFF][size=3][sEVERE] java.lang.NullPointerException[/size][/color]
16:13:38 [sEVERE]       at org.bukkit.craftbukkit.CraftServer.getWorld(CraftServer.java:759)
16:13:38 [sEVERE]       at org.bukkit.craftbukkit.CraftServer.addWorld(CraftServer.java:768)
16:13:38 [sEVERE]       at net.minecraft.server.World.<init>(World.java:169)
16:13:38 [sEVERE]       at net.minecraft.server.WorldServer.<init>(WorldServer.java:27)
16:13:38 [sEVERE]       at net.minecraft.server.SecondaryWorldServer.<init>(SecondaryWorldServer.java:8)
16:13:38 [sEVERE]       at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:298)
16:13:38 [sEVERE]       at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:187)
16:13:38 [sEVERE]       at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425)
16:13:38 [sEVERE]       at net.minecraft.server.ThreadServerApplication.run(SourceFile:490)
16:13:38 [sEVERE] Unexpected exception
java.lang.NullPointerException
       at org.bukkit.craftbukkit.CraftServer.getWorld(CraftServer.java:759)
       at org.bukkit.craftbukkit.CraftServer.addWorld(CraftServer.java:768)
       at net.minecraft.server.World.<init>(World.java:169)
       at net.minecraft.server.WorldServer.<init>(WorldServer.java:27)
       at net.minecraft.server.SecondaryWorldServer.<init>(SecondaryWorldServer.java:8)
       at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:298)
       at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:187)
       at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425)
       at net.minecraft.server.ThreadServerApplication.run(SourceFile:490)

I wgl sie nie włącza

Proszę o pomoc