Bukkit Errors on Mac
So I decided to make me a SMP server. Ok i can it it working and installed Bukkit. I tried to install some plugins like MCmmo, permissions, Estentials. None of them work. I made sure I've checked me Bukkit Version and it is #740. I'll post the error message. And a important thing i'm on a Mac
17:24:28 [SEVERE] Could not load 'plugins/Permissions.jar' in folder 'plugins':
java.lang.UnsupportedClassVersionError: Bad version number in .class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:676)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:36)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:24)
at java.lang.ClassLoader.loadClass(ClassLoader.java:317)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:375)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:134)
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:160)
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:108)
at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:85)
at net.minecraft.server.MinecraftServer.e(MinecraftServer.java:217)
at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:204)
at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:144)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:259)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:394)
WoM Coins: 2
Can someone please help me?