18:34:21 [SEVERE] java.lang.NullPointerException
18:34:21 [SEVERE]       at org.bukkit.craftbukkit.v1_4_6.inventory.CraftMetaItem.applyEnchantments(CraftMetaItem.java:334)
18:34:21 [SEVERE]       at org.bukkit.craftbukkit.v1_4_6.inventory.CraftMetaItem.applyToItem(CraftMetaItem.java:317)
18:34:21 [SEVERE]       at org.bukkit.craftbukkit.v1_4_6.inventory.CraftItemStack.setItemMeta(CraftItemStack.java:352)
18:34:21 [SEVERE]       at org.bukkit.craftbukkit.v1_4_6.inventory.CraftItemStack.asNMSCopy(CraftItemStack.java:35)
18:34:21 [SEVERE]       at org.bukkit.craftbukkit.v1_4_6.inventory.CraftInventory.setItem(CraftInventory.java:79)
18:34:21 [SEVERE]       at org.bukkit.craftbukkit.v1_4_6.inventory.CraftInventoryPlayer.setHelmet(CraftInventoryPlayer.java:53)
18:34:21 [SEVERE]       at me.chaseoes.tf2.classes.TF2Class.apply(TF2Class.java:97)
18:34:21 [SEVERE]       at me.chaseoes.tf2.listeners.PlayerInteractListener.onPlayerInteract(PlayerInteractListener.java:101)
18:34:21 [SEVERE]       at sun.reflect.GeneratedMethodAccessor165.invoke(Unknown Source)
18:34:21 [SEVERE]       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
18:34:21 [SEVERE]       at java.lang.reflect.Method.invoke(Method.java:601)
18:34:21 [SEVERE]       at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
18:34:21 [SEVERE]       at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
18:34:21 [SEVERE]       at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:35)
18:34:21 [SEVERE]       at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
18:34:21 [SEVERE]       at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
18:34:21 [SEVERE]       at org.bukkit.craftbukkit.v1_4_6.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:178)
18:34:21 [SEVERE]       at net.minecraft.server.v1_4_6.PlayerInteractManager.interact(PlayerInteractManager.java:376)
18:34:21 [SEVERE]       at net.minecraft.server.v1_4_6.PlayerConnection.a(PlayerConnection.java:656)
18:34:21 [SEVERE]       at net.minecraft.server.v1_4_6.Packet15Place.handle(SourceFile:58)
18:34:21 [SEVERE]       at net.minecraft.server.v1_4_6.NetworkManager.b(NetworkManager.java:290)
18:34:21 [SEVERE]       at net.minecraft.server.v1_4_6.PlayerConnection.d(PlayerConnection.java:112)
18:34:21 [SEVERE]       at net.minecraft.server.v1_4_6.ServerConnection.b(SourceFile:39)
18:34:21 [SEVERE]       at net.minecraft.server.v1_4_6.DedicatedServerConnection.b(SourceFile:30)
18:34:21 [SEVERE]       at net.minecraft.server.v1_4_6.MinecraftServer.r(MinecraftServer.java:585)
18:34:21 [SEVERE]       at net.minecraft.server.v1_4_6.DedicatedServer.r(DedicatedServer.java:224)
18:34:21 [SEVERE]       at net.minecraft.server.v1_4_6.MinecraftServer.q(MinecraftServer.java:481)
18:34:21 [SEVERE]       at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:416)
18:34:21 [SEVERE]       at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)
18:34:21 [SEVERE] [TF2] The error encountered while changing a player's class is above! Note that TF2 v2.0 has a new format for defining items - click here to view the new default configuration: http://goo.gl/LdKKR