problem with "com.avaje.ebean.EbeanServer"

I get this message then i try to run my plygin

what is the problem?

here is the hole message

Code:

13:39:36 [ALLVARLIG] Could not load plugins\teleport.jar in plugins: null
org.bukkit.plugin.InvalidPluginException
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
ava:105)
        at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.
java:158)
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager
.java:106)
        at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:84)
        at net.minecraft.server.MinecraftServer.e(MinecraftServer.java:215)
        at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:202)
        at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:142)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:257)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:375)
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Sou
rce)
        at java.lang.reflect.Constructor.newInstance(Unknown Source)
        at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
ava:101)
        ... 8 more
Caused by: java.lang.Error: Unresolved compilation problem:
        The type com.avaje.ebean.EbeanServer cannot be resolved. It is indirectl
y referenced from required .class files

        at com.moon_werewolf.Teleport.Teleport.<init>(Teleport.java:1)
        ... 13 more

 

I had this error to.
http://forums.bukkit.org/threads/10926/

 

Build against the RB for now:
CraftBukkit RB 617: http://ci.bukkit.org/job/dev-CraftBukkit/617/
Bukkit RB 495: http://ci.bukkit.org/job/dev-Bukkit/495/

 

Thanks a lot, this fixed my problem! (^_^)