[18:39:05 ERROR]: Error handling conversation prompt
net.minecraft.server.v1_7_R1.ReportedException: Exception getting block type in world
	at net.minecraft.server.v1_7_R1.World.<init>(World.java:217) ~[spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.WorldServer.<init>(WorldServer.java:51) ~[spigotmc.jar:git-Spigot-1225]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.createWorld(CraftServer.java:763) ~[spigotmc.jar:git-Spigot-1225]
	at org.bukkit.Bukkit.createWorld(Bukkit.java:228) ~[spigotmc.jar:git-Spigot-1225]
	at com.yahoo.skaterzero807.server.Arena.<init>(Arena.java:86) ~[?:?]
	at com.yahoo.skaterzero807.server.HGMGS.newArena(HGMGS.java:104) ~[?:?]
	at com.yahoo.skaterzero807.wizard.ArenaModfyWizard$arenaCreateFinish.getPromptText(ArenaModfyWizard.java:376) ~[?:?]
	at org.bukkit.conversations.Conversation.outputNextPrompt(Conversation.java:291) ~[spigotmc.jar:git-Spigot-1225]
	at org.bukkit.conversations.Conversation.acceptInput(Conversation.java:230) [spigotmc.jar:git-Spigot-1225]
	at org.bukkit.craftbukkit.v1_7_R1.conversations.ConversationTracker.acceptConversationInput(ConversationTracker.java:52) [spigotmc.jar:git-Spigot-1225]
	at org.bukkit.craftbukkit.v1_7_R1.entity.CraftPlayer.acceptConversationInput(CraftPlayer.java:873) [spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.PlayerConnection.a(PlayerConnection.java:822) [spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.PacketPlayInChat.a(PacketPlayInChat.java:28) [spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.PacketPlayInChat$1.run(PacketPlayInChat.java:59) [spigotmc.jar:git-Spigot-1225]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.7.0_45]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_45]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.7.0_45]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.7.0_45]
	at java.lang.Thread.run(Unknown Source) [?:1.7.0_45]
Caused by: java.lang.IllegalStateException: Asynchronous entity world add!
	at net.minecraft.server.v1_7_R1.World.a(World.java:2465) ~[spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.Chunk.addEntities(Chunk.java:742) ~[spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:131) ~[spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:88) ~[spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.ChunkProviderServer.getOrCreateChunk(ChunkProviderServer.java:161) ~[spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.World.getChunkAt(World.java:323) ~[spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.World.getType(World.java:261) ~[spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.World.isEmpty(World.java:277) ~[spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.World.b(World.java:249) ~[spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.WorldProvider.canSpawn(SourceFile:62) ~[spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.WorldServer.canSpawn(WorldServer.java:161) ~[spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.WorldServer.b(WorldServer.java:749) ~[spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.WorldServer.a(WorldServer.java:706) ~[spigotmc.jar:git-Spigot-1225]
	at net.minecraft.server.v1_7_R1.World.<init>(World.java:207) ~[spigotmc.jar:git-Spigot-1225]
	... 18 more