12:03:28 [SEVERE] Error occurred while enabling MultiWorld v2.7.1 (Is it up to date?)
java.lang.NoSuchFieldError: G
	at lishid.orebfuscator.chunkscrambler.ScrambledWorldChunkManager.getBiome(ScrambledWorldChunkManager.java:32)
	at org.bukkit.craftbukkit.CraftWorld.getBiome(CraftWorld.java:494)
	at org.bukkit.craftbukkit.block.CraftBlock.getBiome(CraftBlock.java:248)
	at multiworld.worldgen.populators.MyceliumPopulator.chanceBlock(MyceliumPopulator.java:22)
	at multiworld.worldgen.populators.SurfacePopulator.populate(SurfacePopulator.java:28)
	at net.minecraft.server.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:189)
	at net.minecraft.server.Chunk.a(Chunk.java:786)
	at net.minecraft.server.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:107)
	at org.bukkit.craftbukkit.CraftServer.createWorld(CraftServer.java:686)
	at multiworld.data.DataHandler.makeWorld(DataHandler.java:480)
	at multiworld.data.DataHandler.load(DataHandler.java:243)
	at multiworld.data.DataHandler.<init>(DataHandler.java:56)
	at multiworld.MultiWorldPlugin.onEnable(MultiWorldPlugin.java:74)
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:215)
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:336)
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:363)
	at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:250)
	at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:232)
	at net.minecraft.server.MinecraftServer.t(MinecraftServer.java:374)
	at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:361)
	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)