>ma force start Arena1
21:28:53 [SEVERE] Could not pass event ArenaStartEvent to MobUtilites v1.5.2
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
        at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:30)
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:478)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:463)
        at com.garbagemule.MobArena.ArenaImpl.startArena(ArenaImpl.java:395)
        at com.garbagemule.MobArena.ArenaImpl.forceStart(ArenaImpl.java:530)
        at com.garbagemule.MobArena.commands.admin.ForceCommand.execute(ForceCommand.java:81)
        at com.garbagemule.MobArena.commands.CommandHandler.onCommand(CommandHandler.java:88)
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:190)
        at org.bukkit.craftbukkit.v1_6_R2.CraftServer.dispatchCommand(CraftServer.java:527)
        at org.bukkit.craftbukkit.v1_6_R2.CraftServer.dispatchServerCommand(CraftServer.java:516)
        at net.minecraft.server.v1_6_R2.DedicatedServer.ar(DedicatedServer.java:275)
        at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:240)
        at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:481)
        at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:413)
        at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)
Caused by: java.lang.NoClassDefFoundError: com/robbyduke/ma/util/ArenaLog
        at com.robbyduke.ma.event.MobArenaEvents.arenaStart(MobArenaEvents.java:59)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:601)
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
        ... 17 more
Caused by: java.lang.ClassNotFoundException: com.robbyduke.ma.util.ArenaLog
        at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:80)
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
        ... 23 more