[09:09:01 WARN]: java.io.IOException: Unable to delete file: world\region\r.-1.0.mca
[09:09:01 WARN]:        at org.apache.commons.io.FileUtils.forceDelete(FileUtils.java:2279)
[09:09:01 WARN]:        at org.apache.commons.io.FileUtils.cleanDirectory(FileUtils.java:1653)
[09:09:01 WARN]:        at org.apache.commons.io.FileUtils.deleteDirectory(FileUtils.java:1535)
[09:09:01 WARN]:        at org.apache.commons.io.FileUtils.forceDelete(FileUtils.java:2270)
[09:09:01 WARN]:        at org.apache.commons.io.FileUtils.cleanDirectory(FileUtils.java:1653)
[09:09:01 WARN]:        at org.apache.commons.io.FileUtils.deleteDirectory(FileUtils.java:1535)
[09:09:01 WARN]:        at me.tillthen.action.WorldReset.restore(WorldReset.java:35)
[09:09:01 WARN]:        at me.tillthen.action.Commands.onCommand(Commands.java:33)
[09:09:01 WARN]:        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
[09:09:01 WARN]:        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:140)
[09:09:01 WARN]:        at org.bukkit.craftbukkit.v1_11_R1.CraftServer.dispatchCommand(CraftServer.java:626)
[09:09:01 WARN]:        at net.minecraft.server.v1_11_R1.PlayerConnection.handleCommand(PlayerConnection.java:1276)
[09:09:01 WARN]:        at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:1136)
[09:09:01 WARN]:        at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(SourceFile:37)
[09:09:01 WARN]:        at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(SourceFile:9)
[09:09:01 WARN]:        at net.minecraft.server.v1_11_R1.PlayerConnectionUtils$1.run(SourceFile:13)
[09:09:01 WARN]:        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
[09:09:01 WARN]:        at java.util.concurrent.FutureTask.run(Unknown Source)
[09:09:01 WARN]:        at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46)
[09:09:01 WARN]:        at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:695)
[09:09:01 WARN]:        at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:360)
[09:09:01 WARN]:        at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:650)
[09:09:01 WARN]:        at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:554)
[09:09:01 WARN]:        at java.lang.Thread.run(Unknown Source)