error log

2012-06-04 05:00:07 [SEVERE] Cannot load plugins/MyCommand/commands.yml
org.bukkit.configuration.InvalidConfigurationException: unacceptable character '�' (0xFFFD) special characters are not allowed
in "<string>", position 968
	at org.bukkit.configuration.file.YamlConfiguration.loadFromString(YamlConfiguration.java:54)
	at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:138)
	at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:105)
	at org.bukkit.configuration.file.YamlConfiguration.loadConfiguration(YamlConfiguration.java:174)
	at me.mri.mycommand.mycommand.commandsconfig(mycommand.java:156)
	at me.mri.mycommand.mycommand.onEnable(mycommand.java:69)
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:215)
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:337)
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
	at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:256)
	at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:238)
	at net.minecraft.server.MinecraftServer.t(MinecraftServer.java:381)
	at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:368)
	at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:197)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:432)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
Caused by: unacceptable character '�' (0xFFFD) special characters are not allowed
in "<string>", position 968
	at org.yaml.snakeyaml.reader.StreamReader.checkPrintable(StreamReader.java:70)
	at org.yaml.snakeyaml.reader.StreamReader.<init>(StreamReader.java:50)
	at org.yaml.snakeyaml.Yaml.load(Yaml.java:399)
	at org.bukkit.configuration.file.YamlConfiguration.loadFromString(YamlConfiguration.java:52)