Movecraft

[SEVERE] Could not pass event PlayerInteractEvent to Movecraft v3.1.37
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
	at org.bukkit.craftbukkit.v1_6_R3.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:190)
	at net.minecraft.server.v1_6_R3.PlayerInteractManager.interact(PlayerInteractManager.java:373)
	at net.minecraft.server.v1_6_R3.PlayerConnection.a(PlayerConnection.java:630)
	at net.minecraft.server.v1_6_R3.Packet15Place.handle(SourceFile:58)
	at net.minecraft.server.v1_6_R3.NetworkManager.b(NetworkManager.java:296)
	at net.minecraft.server.v1_6_R3.PlayerConnection.e(PlayerConnection.java:116)
	at net.minecraft.server.v1_6_R3.ServerConnection.b(SourceFile:37)
	at net.minecraft.server.v1_6_R3.DedicatedServerConnection.b(SourceFile:30)
	at net.minecraft.server.v1_6_R3.MinecraftServer.t(MinecraftServer.java:592)
	at net.minecraft.server.v1_6_R3.DedicatedServer.t(DedicatedServer.java:227)
	at net.minecraft.server.v1_6_R3.MinecraftServer.s(MinecraftServer.java:488)
	at net.minecraft.server.v1_6_R3.MinecraftServer.run(MinecraftServer.java:421)
	at net.minecraft.server.v1_6_R3.ThreadServerApplication.run(SourceFile:583)
Caused by: java.lang.NullPointerException
	at net.countercraft.movecraft.listener.InteractListener.getCraftTypeFromString(InteractListener.java:206)
	at net.countercraft.movecraft.listener.InteractListener.onSignRightClick(InteractListener.java:104)
	at net.countercraft.movecraft.listener.InteractListener.onPlayerInteract(InteractListener.java:50)
	at sun.reflect.GeneratedMethodAccessor130.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
	... 16 more