14:44:06 [SEVERE] Could not pass event CUSTOM_EVENT to HeroChat
java.lang.NoClassDefFoundError: com/ensifera/animosity/craftirc/IRCEvent
        at com.herocraftonline.dthielke.herochat.HeroChatCraftIRCListener.onCustomEvent(HeroChatCraftIRCListener.java:28)
        at org.bukkit.plugin.java.JavaPluginLoader$53.execute(JavaPluginLoader.java:398)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:59)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:225)
        at com.herocraftonline.dthielke.herochat.channels.Channel.sendMessage(Channel.java:82)
        at com.herocraftonline.dthielke.herochat.channels.Channel.sendMessage(Channel.java:77)
        at com.herocraftonline.dthielke.herochat.channels.Channel.sendMessage(Channel.java:118)
        at com.herocraftonline.dthielke.herochat.HeroChatPlayerListener.onPlayerChat(HeroChatPlayerListener.java:53)
        at org.bukkit.plugin.java.JavaPluginLoader$6.execute(JavaPluginLoader.java:150)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:59)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:225)
        at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:588)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:576)
        at net.minecraft.server.Packet3Chat.a(SourceFile:24)
        at net.minecraft.server.NetworkManager.a(SourceFile:230)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:75)
        at net.minecraft.server.NetworkListenThread.a(SourceFile:100)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:357)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:272)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:366)