McMMO Build1681 repair.chain.yml Error

2013-02-23 13:00:56 [INFO] [mcMMO] Enabling mcMMO v1.4.00-beta4-b1668
2013-02-23 13:00:56 [INFO] [mcMMO] Loading mcMMO config.yml File...
2013-02-23 13:00:56 [INFO] [mcMMO] Loading mcMMO treasures.yml File...
2013-02-23 13:00:56 [INFO] [mcMMO] Loading mcMMO advanced.yml File...
2013-02-23 13:00:56 [INFO] [mcMMO] Loading mcMMO repair.chain.yml File...
2013-02-23 13:00:56 [SEVERE] Error occurred while enabling mcMMO v1.4.00-beta4-b1668 (Is it up to date?)
java.lang.IllegalArgumentException: Stream cannot be null
	at org.apache.commons.lang.Validate.notNull(Validate.java:203)
	at org.bukkit.configuration.file.YamlConfiguration.loadConfiguration(YamlConfiguration.java:197)
	at com.gmail.nossr50.config.ConfigLoader.loadFile(ConfigLoader.java:49)
	at com.gmail.nossr50.config.ConfigLoader.<init>(ConfigLoader.java:36)
	at com.gmail.nossr50.skills.repair.config.RepairConfig.<init>(RepairConfig.java:19)
	at com.gmail.nossr50.skills.repair.config.RepairConfigManager.<init>(RepairConfigManager.java:36)
	at com.gmail.nossr50.mcMMO.loadConfigFiles(mcMMO.java:259)
	at com.gmail.nossr50.mcMMO.onEnable(mcMMO.java:105)
	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_R1.CraftServer.loadPlugin(CraftServer.java:282)
	at org.bukkit.craftbukkit.v1_4_R1.CraftServer.enablePlugins(CraftServer.java:264)
	at org.bukkit.craftbukkit.v1_4_R1.CraftServer.<init>(CraftServer.java:218)
	at net.minecraft.server.v1_4_R1.PlayerList.<init>(PlayerList.java:55)
	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:399)
	at net.minecraft.server.v1_4_R1.ThreadServerApplication.run(SourceFile:849)