Could not pass event VehicleUpdateEvent to MinecartMania v2.5
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:501) [craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:486) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.EntityMinecartAbstract.t_(EntityMinecartAbstract.java:319) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.World.entityJoinedWorld(World.java:1420) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.World.g(World.java:1398) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.World.tickEntities(World.java:1269) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.WorldServer.tickEntities(WorldServer.java:560) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:727) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:335) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:629) [craftbukkit.jar:git-Bukkit-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:537) [craftbukkit.jar:git-Bukkit-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_73]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_7_R3/World
        at com.afforess.minecartmania.entity.MinecartManiaWorld.CreateMMMinecart(MinecartManiaWorld.java:89) ~[?:?]
        at com.afforess.minecartmania.listeners.CoreListener.onVehicleUpdate(CoreListener.java:52) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_73]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_73]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        ... 13 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_7_R3.World
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:67) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_73]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_73]
        at com.afforess.minecartmania.entity.MinecartManiaWorld.CreateMMMinecart(MinecartManiaWorld.java:89) ~[?:?]
        at com.afforess.minecartmania.listeners.CoreListener.onVehicleUpdate(CoreListener.java:52) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_73]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_73]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[craftbukkit.jar:git-Bukkit-18fbb24]
        ... 13 more