[01:22:39] [Server thread/INFO]: astr1al issued server command: /back
[01:22:39] [Server thread/ERROR]: Could not pass event PlayerCommandPreprocessEvent to BetterHorsePlugin v1.0
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:305) ~[spigot.jar:git-Spigot-952179b-bc03b6f]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-952179b-bc03b6f]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-952179b-bc03b6f]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-952179b-bc03b6f]
	at net.minecraft.server.v1_8_R1.PlayerConnection.handleCommand(PlayerConnection.java:1107) [spigot.jar:git-Spigot-952179b-bc03b6f]
	at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:950) [spigot.jar:git-Spigot-952179b-bc03b6f]
	at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java:26) [spigot.jar:git-Spigot-952179b-bc03b6f]
	at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java:53) [spigot.jar:git-Spigot-952179b-bc03b6f]
	at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [spigot.jar:git-Spigot-952179b-bc03b6f]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_40-ea]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_40-ea]
	at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:683) [spigot.jar:git-Spigot-952179b-bc03b6f]
	at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [spigot.jar:git-Spigot-952179b-bc03b6f]
	at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:623) [spigot.jar:git-Spigot-952179b-bc03b6f]
	at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:526) [spigot.jar:git-Spigot-952179b-bc03b6f]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_40-ea]
Caused by: java.lang.NullPointerException
	at soiyeruda.methods.betterhorsesplugin.HorseWarp.checkValidHorseWarps(HorseWarp.java:65) ~[?:?]
	at soiyeruda.methods.betterhorsesplugin.HorseWarp.onPlayerCommand(HorseWarp.java:30) ~[?:?]
	at sun.reflect.GeneratedMethodAccessor574.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_40-ea]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_40-ea]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301) ~[spigot.jar:git-Spigot-952179b-bc03b6f]
	... 15 more