Windows .exe Server Error

[Louis - RagePig]

So I went to make a minecraft server on DireWolf 20 for mc v1.4.7 and it would work for a few seconds, spike in lag and crash. Here is the error report.

---- Minecraft Crash Report ----
// Don't do that.

Time: 04/06/13 21:28
Description: Exception in server tick loop

java.lang.RuntimeException: Error while saving login times
at cpw.mods.fml.server.FMLServerHandler.haltGame(FMLServerHandler.java:102)
at cpw.mods.fml.common.FMLCommonHandler.raiseException(FMLCommonHandler.java:196)
at codechicken.chunkloader.ChunkLoaderManager.updateLoginTimes(ChunkLoaderManager.java:881)
at codechicken.chunkloader.ChunkLoaderManager.tickEnd(ChunkLoaderManager.java:849)
at codechicken.chunkloader.ChunkLoaderEventHandler.tickEnd(ChunkLoaderEventHandler.java:39)
at cpw.mods.fml.common.SingleIntervalHandler.tickEnd(SingleIntervalHandler.java:22)
at cpw.mods.fml.common.FMLCommonHandler.tickEnd(FMLCommonHandler.java:139)
at cpw.mods.fml.common.FMLCommonHandler.onPostWorldTick(FMLCommonHandler.java:283)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:689)
at ho.r(DedicatedServer.java:269)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:599)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
at fy.run(SourceFile:849)
Caused by: java.io.FileNotFoundException: .\world\chickenchunks\loginTimes.dat (The requested operation cannot be performed on a file with a user-mapped section open)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(Unknown Source)
at java.io.FileOutputStream.<init>(Unknown Source)
at codechicken.chunkloader.ChunkLoaderManager.updateLoginTimes(ChunkLoaderManager.java:870)
... 10 more

The server was made using Hamachi if that is at all helpful.

 

[Ashzification]

First (to rule out any possible problem with your setup):

Spoiler

Please follow these steps exactly: http://desk.feed-the-beast.com/index.php?/Knowledgebase/Article/View/9/0/basic-troubleshooting
This is to rule out any issues with your client setup.

If you continue to have trouble, please post your complete client-side console log in debug-mode to pastebin.com and link your paste URL here.
To find your logs: http://desk.feed-the-beast.com/inde...29/1/what-log-do-you-need-where-can-i-find-it