2012-07-20 09:59:32 [INFO] This server is running CraftBukkit version git-Bukkit-jenkins-CraftBukkit-171 (MC: 1.2.5) (Implementing API version 1.2.5-R4.1-MCPC-SNAPSHOT)
2012-07-20 09:59:32 [INFO] [PermissionsEx] sql backend registered!
2012-07-20 09:59:32 [INFO] [PermissionsEx] file backend registered!
2012-07-20 09:59:32 [INFO] [PermissionsEx] PermissionEx plugin initialized.
2012-07-20 09:59:33 [SEVERE] Could not load 'plugins\ServerJobs.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: com/jacktech24/minecraftjobs/main/ServerJobs : Unsupported major.minor version 51.0
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:151)
	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:310)
	at forge.bukkit.ForgePluginManager.loadPlugin(ForgePluginManager.java:55)
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:231)
	at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:221)
	at org.bukkit.craftbukkit.CraftServer.<init>(CraftServer.java:197)
	at net.minecraft.server.ServerConfigurationManager.<init>(ServerConfigurationManager.java:59)
	at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:177)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
Caused by: java.lang.UnsupportedClassVersionError: com/jacktech24/minecraftjobs/main/ServerJobs : Unsupported major.minor version 51.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClassCond(Unknown Source)
	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.findClass(PluginClassLoader.java:41)
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:29)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Unknown Source)
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:140)
	... 9 more