23:23:56 [SEVERE] Could not pass event PlayerPickupItemEvent to BomberCraft v1.4
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:30)
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:478)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:463)
        at net.minecraft.server.v1_6_R2.EntityItem.b_(EntityItem.java:232)
        at net.minecraft.server.v1_6_R2.EntityHuman.r(EntityHuman.java:416)
        at net.minecraft.server.v1_6_R2.EntityHuman.c(EntityHuman.java:408)
        at net.minecraft.server.v1_6_R2.EntityLiving.l_(EntityLiving.java:1261)
        at net.minecraft.server.v1_6_R2.EntityHuman.l_(EntityHuman.java:157)
        at net.minecraft.server.v1_6_R2.EntityPlayer.h(EntityPlayer.java:222)
        at net.minecraft.server.v1_6_R2.PlayerConnection.a(PlayerConnection.java:345)
        at net.minecraft.server.v1_6_R2.Packet10Flying.handle(SourceFile:136)
        at org.spigotmc.netty.NettyNetworkManager.b(NettyNetworkManager.java:235)
        at net.minecraft.server.v1_6_R2.PlayerConnection.e(PlayerConnection.java:118)
        at net.minecraft.server.v1_6_R2.ServerConnection.b(SourceFile:37)
        at org.spigotmc.netty.NettyServerConnection.b(NettyServerConnection.java:125)
        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_R1/entity/CraftPlayer
        at com.Pigeon.Pigeoncraft.BomberCraft.BonusManager.AddNegativeEffect(BonusManager.java:46)
        at com.Pigeon.Pigeoncraft.BomberCraft.InventoryManager.AddItem(InventoryManager.java:86)
        at com.Pigeon.Pigeoncraft.BomberCraft.BCPlayerListener.onPlayerPickupItem(BCPlayerListener.java:108)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:601)
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
        ... 21 more
23:36:36 [SEVERE] Could not pass event PlayerMoveEvent to BomberCraft v1.4
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 net.minecraft.server.v1_6_R2.PlayerConnection.a(PlayerConnection.java:229)
        at net.minecraft.server.v1_6_R2.Packet10Flying.handle(SourceFile:136)
        at net.minecraft.server.v1_6_R2.NetworkManager.b(NetworkManager.java:296)
        at net.minecraft.server.v1_6_R2.PlayerConnection.e(PlayerConnection.java:118)
        at net.minecraft.server.v1_6_R2.ServerConnection.b(SourceFile:37)
        at net.minecraft.server.v1_6_R2.DedicatedServerConnection.b(SourceFile:30)
        at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:590)
        at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:226)
        at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:486)
        at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:419)
        at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)
Caused by: java.lang.NoClassDefFoundError: org/bukkit/craftbukkit/v1_6_R1/entity/CraftPlayer
        at com.Pigeon.Pigeoncraft.BomberCraft.PlayerManager.PlayerMovementEvent(PlayerManager.java:188)
        at com.Pigeon.Pigeoncraft.BomberCraft.GameEventManager.onPlayerMove(GameEventManager.java:45)
        at com.Pigeon.Pigeoncraft.BomberCraft.BCPlayerListener.onPlayerMove(BCPlayerListener.java:161)
        at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:601)
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)