Server Start Error

2013-06-11 23:09:27 [INFO] [Minecraft-Server] Preparing level "world"
2013-06-11 23:09:27 [FINE] [fml.ItemTracker] The difference set is equal
2013-06-11 23:09:27 [INFO] [STDOUT] Transforming it using keepcalm.mods.bukkit.asm.replacements.EntityTracker_BukkitForge !test!
2013-06-11 23:09:27 [INFO] [STDERR] java.lang.NoSuchMethodError: net.minecraft.world.WorldServer.L()Lnet/minecraft/world/storage/WorldInfo;
2013-06-11 23:09:27 [INFO] [STDERR] 	at keepcalm.mods.bukkit.nmsforge.DimensionManagerImpl.setWorld(DimensionManagerImpl.java:141)
2013-06-11 23:09:27 [INFO] [STDERR] 	at net.minecraftforge.common.DimensionManager.setWorld(DimensionManager.java:63)
2013-06-11 23:09:27 [INFO] [STDERR] 	at net.minecraft.world.WorldServer.<init>(WorldServer.java:142)
2013-06-11 23:09:27 [INFO] [STDERR] 	at net.minecraft.server.MinecraftServer.func_71247_a(MinecraftServer.java:238)
2013-06-11 23:09:27 [INFO] [STDERR] 	at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:186)
2013-06-11 23:09:27 [INFO] [STDERR] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:430)
2013-06-11 23:09:27 [INFO] [STDERR] 	at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)
2013-06-11 23:09:27 [SEVERE] [Minecraft-Server] Encountered an unexpected exception NoSuchMethodError
java.lang.NoSuchMethodError: net.minecraft.world.WorldServer.L()Lnet/minecraft/world/storage/WorldInfo;
	at keepcalm.mods.bukkit.nmsforge.DimensionManagerImpl.setWorld(DimensionManagerImpl.java:141)
	at net.minecraftforge.common.DimensionManager.setWorld(DimensionManager.java:63)
	at net.minecraft.world.WorldServer.<init>(WorldServer.java:142)
	at net.minecraft.server.MinecraftServer.func_71247_a(MinecraftServer.java:238)
	at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:186)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:430)
	at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)
2013-06-11 23:09:27 [SEVERE] [Minecraft-Server] This crash report has been saved to: C:\Users\Kevin\Desktop\Spacelite Server\.\crash-reports\crash-2013-06-11_23.09.27-server.txt
2013-06-11 23:09:37 [INFO] [Minecraft-Server] Unknown command. Try /help for a list of commands.
2013-06-11 23:09:39 [INFO] [Minecraft-Server] An unknown error occurred while attempting to perform this command
2013-06-11 23:09:39 [INFO] [STDERR] java.lang.NullPointerException
2013-06-11 23:09:39 [INFO] [STDERR] 	at org.bukkit.Bukkit.getConsoleSender(Bukkit.java:296)
2013-06-11 23:09:39 [INFO] [STDERR] 	at keepcalm.mods.bukkit.forgeHandler.ForgeEventHandler.serverCmd(ForgeEventHandler.java:505)
2013-06-11 23:09:39 [INFO] [STDERR] 	at net.minecraftforge.event.ASMEventHandler_70_ForgeEventHandler_serverCmd_CommandEvent.invoke(.dynamic)
2013-06-11 23:09:39 [INFO] [STDERR] 	at net.minecraftforge.event.ASMEventHandler.invoke(ASMEventHandler.java:39)
2013-06-11 23:09:39 [INFO] [STDERR] 	at net.minecraftforge.event.EventBus.post(EventBus.java:108)
2013-06-11 23:09:39 [INFO] [STDERR] 	at net.minecraft.command.CommandHandler.func_71556_a(CommandHandler.java:51)
2013-06-11 23:09:39 [INFO] [STDERR] 	at net.minecraft.server.dedicated.DedicatedServer.func_71333_ah(DedicatedServer.java:314)
2013-06-11 23:09:39 [INFO] [STDERR] 	at net.minecraft.server.dedicated.DedicatedServer.func_71228_a(DedicatedServer.java:241)
2013-06-11 23:09:39 [INFO] [STDERR] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:512)
2013-06-11 23:09:39 [INFO] [STDERR] 	at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)