[15:15:27 ERROR]: Could not load 'plugins\Vanisher.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.IllegalArgumentException: Pl
ugin already initialized!
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
ava:133) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.
java:336) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager
.java:258) [spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.loadPlugins(CraftServer.ja
va:369) [spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at net.minecraft.server.v1_7_R4.DedicatedServer.init(DedicatedServer.jav
a:152) [spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java
:458) [spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:6
28) [spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
Caused by: java.lang.IllegalArgumentException: Plugin already initialized!
        at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader
.java:122) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at org.bukkit.plugin.java.JavaPlugin.<init>(JavaPlugin.java:66) ~[spigot
.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at t.venq.v.Main.<init>(Main.java:13) ~[?:?]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 ~[?:1.7.0_67]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
 ~[?:1.7.0_67]
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Sou
rce) ~[?:1.7.0_67]
        at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.7.0_6
7]
        at java.lang.Class.newInstance(Unknown Source) ~[?:1.7.0_67]
        at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.jav
a:76) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
ava:129) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        ... 6 more
Caused by: java.lang.IllegalStateException: Initial initialization
        at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader
.java:125) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at org.bukkit.plugin.java.JavaPlugin.<init>(JavaPlugin.java:66) ~[spigot
.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at t.venq.v.Main.<init>(Main.java:13) ~[?:?]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 ~[?:1.7.0_67]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
 ~[?:1.7.0_67]
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Sou
rce) ~[?:1.7.0_67]
        at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[?:1.7.0_6
7]
        at java.lang.Class.newInstance(Unknown Source) ~[?:1.7.0_67]
        at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.jav
a:76) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
ava:129) ~[spigot.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
        ... 6 more