Error

[INFO] ColorMe 3.1 is enabled!
2012-01-08 11:45:42 [INFO] ColorMe loaded Vault successfully
2012-01-08 11:45:42 [SEVERE] Error occurred while enabling ColorMe v3.1 (Is it up to date?): Expected static method com.randomappdev.pluginstats.Ping.init(Lorg/bukkit/plugin/Plugin;)V
java.lang.IncompatibleClassChangeError: Expected static method com.randomappdev.pluginstats.Ping.init(Lorg/bukkit/plugin/Plugin;)V
    at de.xghostkillerx.colorme.ColorMe.onEnable(ColorMe.java:116)
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:188)
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:968)
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:280)
    at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:186)
    at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:169)
    at net.minecraft.server.MinecraftServer.t(MinecraftServer.java:348)
    at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:335)
    at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:165)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:399)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)