2013-09-24 13:36:40 [INFO] Dzekooo lost connection: disconnect.quitting
2013-09-24 13:36:40 [SEVERE] Could not pass event StatUpdateEvent to Achievements vjenkins-Achievements-82
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:459)
    at nl.lolmewn.stats.player.Stat$1.run(Stat.java:96)
    at org.bukkit.craftbukkit.v1_6_R2.scheduler.CraftTask.run(CraftTask.java:53)
    at org.bukkit.craftbukkit.v1_6_R2.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
    at nl.lolmewn.achievements.EventListener.onStatUpdate(EventListener.java:44)
    at sun.reflect.GeneratedMethodAccessor129.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
    ... 9 more