[16:30:49] [Server thread/ERROR]: Could not pass event VehicleUpdateEvent to MinecartMania v2.4
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:294) ~[spigot.jar:git-Spigot-1360]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-1360]
	at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:30) ~[spigot.jar:git-Spigot-1360]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-1360]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.EntityMinecartAbstract.h(EntityMinecartAbstract.java:319) [spigot.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.World.entityJoinedWorld(World.java:1484) [spigot.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.World.playerJoinedWorld(World.java:1460) [spigot.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.World.tickEntities(World.java:1329) [spigot.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.WorldServer.tickEntities(WorldServer.java:515) [spigot.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.MinecraftServer.v(MinecraftServer.java:676) [spigot.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.DedicatedServer.v(DedicatedServer.java:273) [spigot.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.MinecraftServer.u(MinecraftServer.java:566) [spigot.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.MinecraftServer.run(MinecraftServer.java:472) [spigot.jar:git-Spigot-1360]
	at net.minecraft.server.v1_7_R2.ThreadServerApplication.run(SourceFile:618) [spigot.jar:git-Spigot-1360]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_7_R1/World
	at com.afforess.minecartmania.entity.MinecartManiaWorld.getOrCreateMMMinecart(MinecartManiaWorld.java:86) ~[?:?]
	at com.afforess.minecartmania.listeners.CoreListener.onVehicleUpdate(CoreListener.java:41) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_51]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_51]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_51]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:292) ~[spigot.jar:git-Spigot-1360]
	... 14 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_7_R1.World
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:67) ~[spigot.jar:git-Spigot-1360]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[spigot.jar:git-Spigot-1360]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_51]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_51]
	at com.afforess.minecartmania.entity.MinecartManiaWorld.getOrCreateMMMinecart(MinecartManiaWorld.java:86) ~[?:?]
	at com.afforess.minecartmania.listeners.CoreListener.onVehicleUpdate(CoreListener.java:41) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_51]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_51]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_51]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:292) ~[spigot.jar:git-Spigot-1360]
	... 14 more