Problem Weird error with 'Code Chicken Core'

[digpoe]

I am trying to host my own server, so I can use the Command Block for something I am making (When going into SSP with cheats enabled, it seems to only say "Must be an op and in creative mode") but when I launch the server (using this command

java -Xms1G -Xmx2G -jar ftbserver.jar nogui

), everything loads up just fine until I get an error:
2013-02-27 18:35:34 [SEVERE] [Minecraft] Encountered an unexpected exception RuntimeException
java.lang.RuntimeException: Code Chicken Core

I am unsure why this is happening, but I keep seeing lines relating to my WirelessRedstone.cfg file in config not being able to be read, or something like that.

Here is my full error log: http://pastebin.com/FdhnzSwR
I am using the Direwolf20 pack recommended server - with a Windows 7 Professional 64bit computer with 3GB of RAM free.

EDIT: It seems all I had to do was delete some folder in my save file. I'm unsure what file it was - but I deleted these files:
EnderStorage
RedstoneEther
cofh
NEI

 

[digpoe]

It seems redownloading but selecting version 5.1.0 in the dropdown next to the Download Server button on the Launcher has fixed it. How strange, I belive.[DOUBLEPOST=1362002439][/DOUBLEPOST]And now I'm getting the error again! How odd. All I did was copy the world over..

 

[Francis Baster]

Caused by: java.io.FileNotFoundException: .\config\WirelessRedstone.cfg (The requested operation cannot be performed on a file with a user-mapped section open)

This is very strange, it appears that another process is using the file WirelessRedstone.cfg while you are booting the server. Perhaps an anti-virus program?

Apparently this program can show you the processes that are currently making changes to files:
http://www.nirsoft.net/utils/opened_files_view.html

Also deleting the config files will replace them with the mod defaults, which is not recommended as this may cause item ID conflicts. You should use the config files that come with the Direworld20 pack instead.