Errors

~~~What I got when i started the server-

22:37:40 [INFO] [AutoMessage] Enabling AutoMessage v1.4
22:37:40 [INFO] [AutoMessage] AutoMessage Enabled!
22:37:40 [SEVERE] java.io.FileNotFoundException: plugins\AutoMessage\config.yml
(The requested operation cannot be performed on a file with a user-mapped sectio
n open)
22:37:40 [SEVERE]       at java.io.FileOutputStream.open(Native Method)
22:37:40 [SEVERE]       at java.io.FileOutputStream.<init>(Unknown Source)
22:37:40 [SEVERE]       at java.io.FileOutputStream.<init>(Unknown Source)
22:37:40 [SEVERE]       at java.io.PrintWriter.<init>(Unknown Source)
22:37:40 [SEVERE]       at com.JnaniDev.AutoMessage.AutoMessage.removeHeader(Aut
oMessage.java:155)
22:37:40 [SEVERE]       at com.JnaniDev.AutoMessage.AutoMessage.save(AutoMessage
.java:170)
22:37:40 [SEVERE]       at com.JnaniDev.AutoMessage.AutoMessage.load(AutoMessage
.java:237)
22:37:40 [SEVERE]       at com.JnaniDev.AutoMessage.AutoMessage.onEnable(AutoMes
sage.java:37)
22:37:40 [SEVERE]       at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlug
in.java:215)
22:37:40 [SEVERE]       at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(
JavaPluginLoader.java:337)
22:37:40 [SEVERE]       at org.bukkit.plugin.SimplePluginManager.enablePlugin(Si
mplePluginManager.java:381)
22:37:40 [SEVERE]       at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftSe
rver.java:256)
22:37:40 [SEVERE]       at org.bukkit.craftbukkit.CraftServer.enablePlugins(Craf
tServer.java:238)
22:37:40 [SEVERE]       at net.minecraft.server.MinecraftServer.t(MinecraftServe
r.java:381)
22:37:40 [SEVERE]       at net.minecraft.server.MinecraftServer.a(MinecraftServe
r.java:368)
22:37:40 [SEVERE]       at net.minecraft.server.MinecraftServer.init(MinecraftSe
rver.java:197)
22:37:40 [SEVERE]       at net.minecraft.server.MinecraftServer.run(MinecraftSer
ver.java:432)
22:37:40 [SEVERE]       at net.minecraft.server.ThreadServerApplication.run(Sour
ceFile:492)

~~~What I got when I reloaded the plugin-

22:52:05 [SEVERE] java.io.FileNotFoundException: plugins\AutoMessage\config.yml
(The requested operation cannot be performed on a file with a user-mapped sectio
n open)
22:52:05 [SEVERE]       at java.io.FileOutputStream.open(Native Method)
22:52:05 [SEVERE]       at java.io.FileOutputStream.<init>(Unknown Source)
22:52:05 [SEVERE]       at java.io.FileOutputStream.<init>(Unknown Source)
22:52:05 [SEVERE]       at java.io.PrintWriter.<init>(Unknown Source)
22:52:05 [SEVERE]       at com.JnaniDev.AutoMessage.AutoMessage.removeHeader(Aut
oMessage.java:155)
22:52:05 [SEVERE]       at com.JnaniDev.AutoMessage.AutoMessage.save(AutoMessage
.java:170)
22:52:05 [SEVERE]       at com.JnaniDev.AutoMessage.AutoMessage.load(AutoMessage
.java:237)
22:52:05 [SEVERE]       at com.JnaniDev.AutoMessage.AMCommandExecutor.reload(AMC
ommandExecutor.java:294)
22:52:05 [SEVERE]       at com.JnaniDev.AutoMessage.AMCommandExecutor.onCommand(
AMCommandExecutor.java:23)
22:52:05 [SEVERE]       at org.bukkit.command.PluginCommand.execute(PluginComman
d.java:40)
22:52:05 [SEVERE]       at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCo
mmandMap.java:166)
22:52:05 [SEVERE]       at org.bukkit.craftbukkit.CraftServer.dispatchCommand(Cr
aftServer.java:479)
22:52:05 [SEVERE]       at net.minecraft.server.NetServerHandler.handleCommand(N
etServerHandler.java:821)
22:52:05 [SEVERE]       at net.minecraft.server.NetServerHandler.chat(NetServerH
andler.java:781)
22:52:05 [SEVERE]       at net.minecraft.server.NetServerHandler.a(NetServerHand
ler.java:764)
22:52:05 [SEVERE]       at net.minecraft.server.Packet3Chat.handle(Packet3Chat.j
ava:34)
22:52:05 [SEVERE]       at net.minecraft.server.NetworkManager.b(NetworkManager.
java:229)
22:52:05 [SEVERE]       at net.minecraft.server.NetServerHandler.a(NetServerHand
ler.java:113)
22:52:05 [SEVERE]       at net.minecraft.server.NetworkListenThread.a(NetworkLis
tenThread.java:78)
22:52:05 [SEVERE]       at net.minecraft.server.MinecraftServer.w(MinecraftServe
r.java:567)
22:52:05 [SEVERE]       at net.minecraft.server.MinecraftServer.run(MinecraftSer
ver.java:459)
22:52:05 [SEVERE]       at net.minecraft.server.ThreadServerApplication.run(Sour
ceFile:492)
>