When i type /biomelist in a flatworld this pops up: Code: [19:23:29 INFO]: LegendaryGuy issued server command: /biomeinfo [19:23:29 WARN]: java.lang.NoClassDefFoundError: Could not initialize class com.sk89q.worldedit.bukkit.BukkitBiomeType [19:23:29 WARN]: at com.sk89q.worldedit.bukkit.BukkitWorld.getBiome(BukkitWorld.java:384) [19:23:29 WARN]: at com.sk89q.worldedit.commands.BiomeCommands.biomeInfo(BiomeCommands.java:106) [19:23:29 WARN]: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [19:23:29 WARN]: at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) [19:23:29 WARN]: at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) [19:23:29 WARN]: at java.lang.reflect.Method.invoke(Unknown Source) [19:23:29 WARN]: at com.sk89q.minecraft.util.commands.CommandsManager.invokeMethod(CommandsManager.java:533) [19:23:29 WARN]: at com.sk89q.worldedit.WorldEdit$1.invokeMethod(WorldEdit.java:258) [19:23:29 WARN]: at com.sk89q.worldedit.WorldEdit$1.invokeMethod(WorldEdit.java:189) [19:23:29 WARN]: at com.sk89q.minecraft.util.commands.CommandsManager.executeMethod(CommandsManager.java:520) [19:23:29 WARN]: at com.sk89q.minecraft.util.commands.CommandsManager.execute(CommandsManager.java:425) [19:23:29 WARN]: at com.sk89q.worldedit.WorldEdit.handleCommand(WorldEdit.java:1464) [19:23:29 WARN]: at com.sk89q.worldedit.bukkit.WorldEditPlugin.onCommand(WorldEditPlugin.java:242) [19:23:29 WARN]: at com.sk89q.bukkit.util.DynamicPluginCommand.execute(DynamicPluginCommand.java:52) [19:23:29 WARN]: at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) [19:23:29 WARN]: at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:651) [19:23:29 WARN]: at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1392) [19:23:29 WARN]: at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1227) [19:23:29 WARN]: at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [19:23:29 WARN]: at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [19:23:29 WARN]: at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [19:23:29 WARN]: at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [19:23:29 WARN]: at java.util.concurrent.FutureTask.run(Unknown Source) [19:23:29 WARN]: at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [19:23:29 WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:748) [19:23:29 WARN]: at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406) [19:23:29 WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [19:23:29 WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [19:23:29 WARN]: at java.lang.Thread.run(Unknown Source) When i type /biomelist in a normal world this also pops up: Code: [19:26:17 INFO]: LegendaryGuy issued server command: /biomelist [19:26:17 WARN]: java.lang.NoClassDefFoundError: Could not initialize class com.sk89q.worldedit.bukkit.BukkitBiomeType [19:26:17 WARN]: at com.sk89q.worldedit.bukkit.BukkitBiomeTypes.all(BukkitBiomeTypes.java:37) [19:26:17 WARN]: at com.sk89q.worldedit.commands.BiomeCommands.biomeList(BiomeCommands.java:57) [19:26:17 WARN]: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [19:26:17 WARN]: at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) [19:26:17 WARN]: at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) [19:26:17 WARN]: at java.lang.reflect.Method.invoke(Unknown Source) [19:26:17 WARN]: at com.sk89q.minecraft.util.commands.CommandsManager.invokeMethod(CommandsManager.java:533) [19:26:17 WARN]: at com.sk89q.worldedit.WorldEdit$1.invokeMethod(WorldEdit.java:258) [19:26:17 WARN]: at com.sk89q.worldedit.WorldEdit$1.invokeMethod(WorldEdit.java:189) [19:26:17 WARN]: at com.sk89q.minecraft.util.commands.CommandsManager.executeMethod(CommandsManager.java:520) [19:26:17 WARN]: at com.sk89q.minecraft.util.commands.CommandsManager.execute(CommandsManager.java:425) [19:26:17 WARN]: at com.sk89q.worldedit.WorldEdit.handleCommand(WorldEdit.java:1464) [19:26:17 WARN]: at com.sk89q.worldedit.bukkit.WorldEditPlugin.onCommand(WorldEditPlugin.java:242) [19:26:17 WARN]: at com.sk89q.bukkit.util.DynamicPluginCommand.execute(DynamicPluginCommand.java:52) [19:26:17 WARN]: at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) [19:26:17 WARN]: at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:651) [19:26:17 WARN]: at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1392) [19:26:17 WARN]: at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1227) [19:26:17 WARN]: at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [19:26:17 WARN]: at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [19:26:17 WARN]: at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [19:26:17 WARN]: at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [19:26:17 WARN]: at java.util.concurrent.FutureTask.run(Unknown Source) [19:26:17 WARN]: at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [19:26:17 WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:748) [19:26:17 WARN]: at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406) [19:26:17 WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [19:26:17 WARN]: at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [19:26:17 WARN]: at java.lang.Thread.run(Unknown Source) Does anyone know how to fix this?