Bukkit

Hello,
I've got a strange error on my server, and it's possible that it comes from your plugin (the "Slot" word made me think of it, I didn't test yet). I don't know how it comes.
That's what the logs tell :

2013-03-23 15:29:32 [SEVERE] Encountered an unexpected exception StackOverflowError
java.lang.StackOverflowError
	at net.minecraft.server.v1_4_R1.Slot.getItem(Slot.java:43)
	at net.minecraft.server.v1_4_R1.Container.b(Container.java:102)
	at net.minecraft.server.v1_4_R1.Container.clickItem(Container.java:137)
	at net.minecraft.server.v1_4_R1.Container.a(Container.java:271)
	at net.minecraft.server.v1_4_R1.Container.clickItem(Container.java:143)

(The two last lines are repeated many times)
I'm using CraftBukkit R1.4.7-R1.0 and the latest version of the plugin (adapted for 1.4.6-R0.3).
If it's not your plugin, I apologize, but I believe it's since your plugin is installed that my server crash (this is not an insult).