Failed Spout to shut down the server

Everything is perfect, but when I restart or turn off the server I get the following error:

Code:

2012-06-29 10:59:13 [SEVERE] Could not pass event PluginDisableEvent to Spout<br />
org.bukkit.event.EventException<br />
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:304)<br />
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)<br />
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:460)<br />
at org.bukkit.plugin.java.JavaPluginLoader.disablePlugin(JavaPluginLoader.java:357)<br />
at org.bukkit.plugin.SimplePluginManager.disablePlugin(SimplePluginManager.java:400)<br />
at org.bukkit.plugin.SimplePluginManager.disablePlugins(SimplePluginManager.java:393)<br />
at org.bukkit.craftbukkit.CraftServer.disablePlugins(CraftServer.java:251)<br />
at net.minecraft.server.MinecraftServer.stop(MinecraftServer.java:409)<br />
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:489)<br />
at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)<br />
Caused by: java.lang.UnsupportedOperationException: Cannot remove the exp bar. Use setVisible(false) to hide it instead<br />
at org.getspout.spoutapi.gui.InGameScreen.removeWidget(InGameScreen.java:127)<br />
at org.getspout.spoutapi.gui.GenericScreen.removeWidgets(GenericScreen.java:105)<br />
at org.getspout.spout.PluginListener.onPluginDisable(PluginListener.java:39)<br />
at sun.reflect.GeneratedMethodAccessor249.invoke(Unknown Source)<br />
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)<br />
at java.lang.reflect.Method.invoke(Method.java:601)<br />
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302)<br />
... 9 more<br />

Currently I have Bukkit 2222 (1.2.5-R4.0), and Spout # 1234