World Edit - Java proplem

hey!
in the last days i wanted to set up a minecraft server on linux.

i take the "Bukkit"-version because i thought its easy to get updates..

i always get this warining (java is installed):

Code:

[SEVERE] Could not load 'plugins/WorldEdit.jar' in folder 'plugins':
java.util.zip.ZipException: invalid END header (bad central directory offset)
    at java.util.zip.ZipFile.open(Native Method)
    at java.util.zip.ZipFile.<init>(ZipFile.java:131)
    at java.util.jar.JarFile.<init>(JarFile.java:150)
    at java.util.jar.JarFile.<init>(JarFile.java:114)
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:59)
    at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:191)
    at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:115)
    at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:100)
    at net.minecraft.server.MinecraftServer.e(MinecraftServer.java:218)
    at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:205)
    at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:145)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:260)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:394)

Somebody who have the same error or a solution?

thx for help.

if its possible german pls.
or skype: mann_1996

mfg Mannsinn


Minecraft-Bukkit-Server: 1.5_01
WorldEdit 4.4
Server is running!