smoketrail

[SEVERE] Could not pass event ProjectileLaunchEvent to Smoke Trail v5.0
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.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:47)
>       at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:478)
>       at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:463)
>       at org.bukkit.craftbukkit.v1_6_R2.event.CraftEventFactory.callProjectileLaunchEvent(CraftEventFactory.java:601)
>       at net.minecraft.server.v1_6_R2.World.addEntity(World.java:979)
>       at net.minecraft.server.v1_6_R2.World.addEntity(World.java:945)
>       at net.minecraft.server.v1_6_R2.ItemBow.a(ItemBow.java:60)
>       at net.minecraft.server.v1_6_R2.ItemStack.b(ItemStack.java:336)
>       at net.minecraft.server.v1_6_R2.EntityHuman.bs(EntityHuman.java:98)
>       at net.minecraft.server.v1_6_R2.PlayerConnection.a(PlayerConnection.java:500)
>       at net.minecraft.server.v1_6_R2.Packet14BlockDig.handle(SourceFile:46)
>       at org.spigotmc.netty.NettyNetworkManager.b(NettyNetworkManager.java:230)
>       at net.minecraft.server.v1_6_R2.PlayerConnection.e(PlayerConnection.java:116)
>       at net.minecraft.server.v1_6_R2.ServerConnection.b(SourceFile:37)
>       at org.spigotmc.netty.NettyServerConnection.b(NettyServerConnection.java:132)
>       at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:592)
>       at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:239)
>       at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:481)
>       at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:413)
>       at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)
Caused by: java.lang.NoClassDefFoundError: org/bukkit/craftbukkit/v1_6_R3/entity/CraftArrow
>       at me.dimension.smoke.traillistener.onPlayerShootArrow(traillistener.java:362)
>       at sun.reflect.GeneratedMethodAccessor185.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)
>       ... 21 more