2012-12-20 09:54:39 [INFO] [BookText] Enabling BookText v0.3
2012-12-20 09:54:39 [SEVERE] Error occurred while enabling BookText v0.3 (Is it up to date?)
java.lang.NoClassDefFoundError: org/bukkit/craftbukkit/inventory/CraftItemStack
	at pl.mineville.ajaw.Main.onEnable(Main.java:22)
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
	at org.bukkit.craftbukkit.v1_4_5.CraftServer.loadPlugin(CraftServer.java:272)
	at org.bukkit.craftbukkit.v1_4_5.CraftServer.enablePlugins(CraftServer.java:254)
	at net.minecraft.server.v1_4_5.MinecraftServer.j(MinecraftServer.java:320)
	at net.minecraft.server.v1_4_5.MinecraftServer.e(MinecraftServer.java:299)
	at net.minecraft.server.v1_4_5.MinecraftServer.a(MinecraftServer.java:258)
	at net.minecraft.server.v1_4_5.DedicatedServer.init(DedicatedServer.java:147)
	at net.minecraft.server.v1_4_5.MinecraftServer.run(MinecraftServer.java:398)
	at net.minecraft.server.v1_4_5.ThreadServerApplication.run(SourceFile:856)
Caused by: java.lang.ClassNotFoundException: org.bukkit.craftbukkit.inventory.CraftItemStack
	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)
	... 12 more