Could not pass event AsyncPlayerChatEvent to AntiPub v0.3.1
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:460)
        at net.minecraft.server.v1_5_R3.PlayerConnection.chat(PlayerConnection.java:906)
        at net.minecraft.server.v1_5_R3.PlayerConnection.a(PlayerConnection.java:846)
        at net.minecraft.server.v1_5_R3.Packet3Chat.handle(Packet3Chat.java:44)
        at org.spigotmc.netty.NettyNetworkManager$2.run(NettyNetworkManager.java:130)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
        at java.util.concurrent.FutureTask.run(FutureTask.java:166)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:724)
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: -1
        at java.lang.String.substring(String.java:1911)
        at com.wolfy9247.AntiPub.APMessage.pullLinks(APMessage.java:147)
        at com.wolfy9247.AntiPub.APMessage.isURL(APMessage.java:107)
        at com.wolfy9247.AntiPub.APMessage.getType(APMessage.java:78)
        at com.wolfy9247.AntiPub.APMessage.isAllowed(APMessage.java:63)
        at com.wolfy9247.AntiPub.AntiPubListener.onPlayerChat(AntiPubListener.java:45)
        at sun.reflect.GeneratedMethodAccessor297.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)
        ... 14 more