2013-05-02 18:17:17 [INFO] [BKCommonLib] Loading BKCommonLib v1.51
2013-05-02 18:17:17 [SEVERE] org/bukkit/craftbukkit/v1_5_R2/inventory/CraftItemStack initializing BKCommonLib v1.51 (Is it up to date?)
java.lang.NoClassDefFoundError: org/bukkit/craftbukkit/v1_5_R2/inventory/CraftItemStack
	at com.bergerkiller.bukkit.common.conversion.type.WrapperConverter.<clinit>(WrapperConverter.java:227)
	at com.bergerkiller.bukkit.common.conversion.type.ConversionTypes.<clinit>(ConversionTypes.java:90)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Unknown Source)
	at com.bergerkiller.bukkit.common.Common.loadClasses(Common.java:105)
	at com.bergerkiller.bukkit.common.internal.CommonClasses.init(CommonClasses.java:13)
	at com.bergerkiller.bukkit.common.internal.CommonPlugin.onLoad(CommonPlugin.java:354)
	at org.bukkit.craftbukkit.v1_5_R3.CraftServer.loadPlugins(CraftServer.java:244)
	at org.bukkit.craftbukkit.v1_5_R3.CraftServer.<init>(CraftServer.java:217)
	at net.minecraft.server.v1_5_R3.PlayerList.<init>(PlayerList.java:55)
	at net.minecraft.server.v1_5_R3.DedicatedPlayerList.<init>(SourceFile:11)
	at net.minecraft.server.v1_5_R3.DedicatedServer.init(DedicatedServer.java:106)
	at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:382)
	at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.ClassNotFoundException: org.bukkit.craftbukkit.v1_5_R2.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)
	... 14 more