21.02.2011 19:14:17 org.bukkit.plugin.SimplePluginManager loadPlugins
SCHWERWIEGEND: Could not load plugins\Essentials.jar in plugins: null
org.bukkit.plugin.InvalidPluginException
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
ava:79)
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.
java:117)
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager
.java:82)
        at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:53)
        at net.minecraft.server.MinecraftServer.e(MinecraftServer.java:171)
        at net.minecraft.server.MinecraftServer.c(MinecraftServer.java:158)
        at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:110)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:209)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:512)
Caused by: java.lang.NoSuchMethodException: com.earth2me.essentials.Essentials.<
init>(org.bukkit.plugin.PluginLoader, org.bukkit.Server, org.bukkit.plugin.Plugi
nDescriptionFile, java.io.File, java.io.File, java.lang.ClassLoader)
        at java.lang.Class.getConstructor0(Unknown Source)
        at java.lang.Class.getConstructor(Unknown Source)
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
ava:75)
        ... 8 more