Anoying error please help :)

Code:

22:41:27 [SEVERE] Could not load 'plugins\CombatTag.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: net/mi
necraft/server/v1_6_R1/World
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
ava:184)
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.
java:305)
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager
.java:230)
        at org.bukkit.craftbukkit.v1_5_R3.CraftServer.loadPlugins(CraftServer.ja
va:239)
        at org.bukkit.craftbukkit.v1_5_R3.CraftServer.<init>(CraftServer.java:21
7)
        at net.minecraft.server.v1_5_R3.PlayerList.<init>(PlayerList.java:55)
        at net.minecraft.server.v1_5_R3.DedicatedPlayerList.<init>(SourceFile:11
)
        at net.minecraft.server.v1_5_R3.DedicatedServer.init(DedicatedServer.jav
a:106)
        at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java
:382)
        at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:5
73)
Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_6_R1/World
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Unknown Source)
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
ava:173)
        ... 9 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_6_R1.World
        at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader
.java:70)
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.
java:53)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        ... 12 more

Any one knows whats wrong ?

 

Jace_oio your plugin or someone elses? maybe you should report it to them if it is. c:

 

Not without your code.

Actually it looks like this isn't even your plugin, so wrong forum.

 

Its someone elses but im editing it.