Bukkit

Hey,

i cant use your API!

I became the error:
Caused by: java.lang.IllegalStateException: Initial initialization
        at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader.java:101)
        at org.bukkit.plugin.java.JavaPlugin.<init>(JavaPlugin.java:59)
        at uk.co.commonblob.SkyText.SkyText.<init>(SkyText.java:28)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
        at java.lang.Class.newInstance(Class.java:374)
        at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:52)
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:133)
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:313)
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:236)
        at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugins(CraftServer.java:350)
        at org.bukkit.craftbukkit.v1_7_R1.CraftServer.<init>(CraftServer.java:312)
        at net.minecraft.server.v1_7_R1.PlayerList.<init>(PlayerList.java:63)
        at net.minecraft.server.v1_7_R1.DedicatedPlayerList.<init>(SourceFile:14)
        at net.minecraft.server.v1_7_R1.DedicatedServer.init(DedicatedServer.java:126)
        at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:424)
        at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617)
My code:
http://pastebin.com/YAsuAPBZ

What must i fix?

Thanks a lot in advance!