[INFO] [GlobalMarket] Enabling GlobalMarket v1.2.2
2013-07-23 08:15:07 [SEVERE] Error occurred while enabling GlobalMarket v1.2.2 (Is it up to date?)
java.lang.UnsupportedClassVersionError: com/survivorserver/GlobalMarket/tasks/CleanTask : Unsupported major.minor version 51.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(Unknown Source)
	at java.security.SecureClassLoader.defineClass(Unknown Source)
	at java.net.URLClassLoader.defineClass(Unknown Source)
	at java.net.URLClassLoader.access$000(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(Unknown Source)
	at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:80)
	at org.bukkit.plugin.java.JavaPluginLoader.getClassByName0(JavaPluginLoader.java:300)
	at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:76)
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClassInternal(Unknown Source)
	at com.survivorserver.GlobalMarket.Market.onEnable(Market.java:130)
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
	at org.bukkit.craftbukkit.v1_6_R2.CraftServer.loadPlugin(CraftServer.java:282)
	at org.bukkit.craftbukkit.v1_6_R2.CraftServer.enablePlugins(CraftServer.java:264)
	at net.minecraft.server.v1_6_R2.MinecraftServer.l(MinecraftServer.java:313)
	at net.minecraft.server.v1_6_R2.MinecraftServer.f(MinecraftServer.java:290)
	at net.minecraft.server.v1_6_R2.MinecraftServer.a(MinecraftServer.java:250)
	at net.minecraft.server.v1_6_R2.DedicatedServer.init(DedicatedServer.java:151)
	at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:391)
	at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)