Bukkit

Hi, I tried to make an arena, and when I did the /hg arena create and filled everything out, on the consol, it does 10%-93% then says it is done.....

Then I get the people needed to join, and it says, Waiting for arena (Name here) to finish generating...

It has done this now for 5 arenas...... :'(

Here is a report that it made,

Before this, the arena was loading, then got to 97% and then did this...
09:34:13 [WARNING] Can't keep up! Did the system time change, or is the server o
verloaded?
09:34:13 [INFO] [WorldGuard] 0 regions loaded for 'world_Arena1'
09:34:13 [WARNING] [Hunger Games Map Generator Server] Task #56 for Hunger Games
Map Generator Server v1.1pre generated an exception
java.lang.NoClassDefFoundError: net/minecraft/server/v1_6_R2/RegionFileCache
at com.yahoo.skaterzero807.server.Arena.clearRegionFileCache(Arena.java:
666)
at com.yahoo.skaterzero807.server.Arena.writeWorld(Arena.java:622)
at com.yahoo.skaterzero807.server.Regenerator.regenerate(Regenerator.jav
a:48)
at com.yahoo.skaterzero807.server.Regenerator$DelayRegenerator.run(Regen
erator.java:62)
at org.bukkit.craftbukkit.v1_6_R3.scheduler.CraftTask.run(CraftTask.java
:53)
at org.bukkit.craftbukkit.v1_6_R3.scheduler.CraftScheduler.mainThreadHea
rtbeat(CraftScheduler.java:345)
at net.minecraft.server.v1_6_R3.MinecraftServer.t(MinecraftServer.java:5
24)
at net.minecraft.server.v1_6_R3.DedicatedServer.t(DedicatedServer.java:2
27)
at net.minecraft.server.v1_6_R3.MinecraftServer.s(MinecraftServer.java:4
88)
at net.minecraft.server.v1_6_R3.MinecraftServer.run(MinecraftServer.java
:421)
at net.minecraft.server.v1_6_R3.ThreadServerApplication.run(SourceFile:5
83)
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_6_R2.Region
FileCache
at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader
.java:70)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.
java:53)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 11 more

Here is a report that it made,

Before this, the arena was loading, then got to 97% and then did this...
09:34:13 [WARNING] Can't keep up! Did the system time change, or is the server o
verloaded?
09:34:13 [INFO] [WorldGuard] 0 regions loaded for 'world_Arena1'
09:34:13 [WARNING] [Hunger Games Map Generator Server] Task #56 for Hunger Games
Map Generator Server v1.1pre generated an exception
java.lang.NoClassDefFoundError: net/minecraft/server/v1_6_R2/RegionFileCache
at com.yahoo.skaterzero807.server.Arena.clearRegionFileCache(Arena.java:
666)
at com.yahoo.skaterzero807.server.Arena.writeWorld(Arena.java:622)
at com.yahoo.skaterzero807.server.Regenerator.regenerate(Regenerator.jav
a:48)
at com.yahoo.skaterzero807.server.Regenerator$DelayRegenerator.run(Regen
erator.java:62)
at org.bukkit.craftbukkit.v1_6_R3.scheduler.CraftTask.run(CraftTask.java
:53)
at org.bukkit.craftbukkit.v1_6_R3.scheduler.CraftScheduler.mainThreadHea
rtbeat(CraftScheduler.java:345)
at net.minecraft.server.v1_6_R3.MinecraftServer.t(MinecraftServer.java:5
24)
at net.minecraft.server.v1_6_R3.DedicatedServer.t(DedicatedServer.java:2
27)
at net.minecraft.server.v1_6_R3.MinecraftServer.s(MinecraftServer.java:4
88)
at net.minecraft.server.v1_6_R3.MinecraftServer.run(MinecraftServer.java
:421)
at net.minecraft.server.v1_6_R3.ThreadServerApplication.run(SourceFile:5
83)
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_6_R2.Region
FileCache
at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader
.java:70)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.
java:53)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 11 more