2013-01-18 03:34:59 [INFO] [BKCommonLib] Loading BKCommonLib v1.42
2013-01-18 03:34:59 [SEVERE] org/bukkit/craftbukkit/v1_4_6/block/CraftSign initializing BKCommonLib v1.42 (Is it up to date?)
java.lang.NoClassDefFoundError: org/bukkit/craftbukkit/v1_4_6/block/CraftSign
	at com.bergerkiller.bukkit.common.reflection.classes.BlockStateRef.<clinit>(BlockStateRef.java:16)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Unknown Source)
	at com.bergerkiller.bukkit.common.Common.loadClasses(Common.java:91)
	at com.bergerkiller.bukkit.common.internal.CommonClasses.loadRef(CommonClasses.java:26)
	at com.bergerkiller.bukkit.common.internal.CommonClasses.init(CommonClasses.java:13)
	at com.bergerkiller.bukkit.common.internal.CommonPlugin.onLoad(CommonPlugin.java:214)
	at org.bukkit.craftbukkit.v1_4_R1.CraftServer.loadPlugins(CraftServer.java:284)
	at org.bukkit.craftbukkit.v1_4_R1.CraftServer.<init>(CraftServer.java:257)
	at net.minecraft.server.v1_4_R1.PlayerList.<init>(PlayerList.java:52)
	at net.minecraft.server.v1_4_R1.DedicatedPlayerList.<init>(SourceFile:11)
	at net.minecraft.server.v1_4_R1.DedicatedServer.init(DedicatedServer.java:104)
	at net.minecraft.server.v1_4_R1.MinecraftServer.run(MinecraftServer.java:404)
	at net.minecraft.server.v1_4_R1.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.ClassNotFoundException: org.bukkit.craftbukkit.v1_4_6.block.CraftSign
	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