2012-03-02 05:08:11 [SEVERE] Error occurred while enabling Multiverse-NetherPortals v2.3-AB (Is it up to date?)
java.lang.NoSuchMethodError: org.bukkit.plugin.PluginDescriptionFile.getAuthors()Ljava/util/ArrayList;
	at com.onarandombox.MultiverseNetherPortals.MultiverseNetherPortals.getAuthors(MultiverseNetherPortals.java:173)
	at com.onarandombox.MultiverseNetherPortals.MultiverseNetherPortals.onEnable(MultiverseNetherPortals.java:91)
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:215)
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:336)
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:363)
	at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:250)
	at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:232)
	at net.minecraft.server.MinecraftServer.t(MinecraftServer.java:369)
	at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:356)
	at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:187)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:420)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:490)