Problem Server Crashing on start-up

[Minimight]

Hey guys,
Me and my friends have been playing FTB on my Direwolf20 server for a while now, everything working fine. Today, i go to start the server and get this error message:

---- Minecraft Crash Report ----
// Oops.
 
Time: 3/2/13 8:56 PM
Description: Exception in server tick loop
 
java.lang.NullPointerException
    at codechicken.wirelessredstone.core.RedstoneEtherServer.setDimensionTransmitterCount(RedstoneEtherServer.java:626)
    at codechicken.wirelessredstone.core.SaveManager.loadDimensionHash(SaveManager.java:667)
    at codechicken.wirelessredstone.core.RedstoneEtherServer.<init>(RedstoneEtherServer.java:34)
    at codechicken.wirelessredstone.core.RedstoneEther.loadServerWorld(RedstoneEther.java:120)
    at codechicken.wirelessredstone.core.WRCoreEventHandler.onWorldLoad(WRCoreEventHandler.java:30)
    at net.minecraftforge.event.ASMEventHandler_104_WRCoreEventHandler_onWorldLoad_Load.invoke(.dynamic)
    at net.minecraftforge.event.ASMEventHandler.invoke(ASMEventHandler.java:35)
    at net.minecraftforge.event.EventBus.post(EventBus.java:103)
    at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:279)
    at ho.c(DedicatedServer.java:180)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:458)
    at fy.run(SourceFile:849)
 
-- System Details --
Details:
    Minecraft Version: 1.4.7
    Operating System: Windows Vista (amd64) version 6.0
    Java Version: 1.7.0_13, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 509626272 bytes (486 MB) / 589824000 bytes (562 MB) up to 954466304 bytes (910 MB)
    JVM Flags: 2 total; -Xms512M -Xmx1G
    AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
    Suspicious classes: FML and Forge are installed
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP v7.26a FML v4.7.32.553 Minecraft Forge 6.6.1.524 60 mods loaded, 60 mods active
    Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
    Player Count: 0 / 10; []
    Is Modded: Definitely; Server brand changed to 'forge,fml'
    Type: Dedicated Server (map_server.txt)

There is more text, lots of pre-initialized>initialized>post-initialized>available>available, but that wouldn't fit in the thread. Would greatly appreciate some help with this problem.

 

[yuval3210]

To fix this you have to go to your world in the server folder and delete the folder called "RedstoneEther".
After that replace your "mods" folder in your server folder with a new "mods" folder from
a new server(with the same version).
Keep in mind - all your wireless retrievers and receivers will be lost!!!!!!!
Hope this comment isn't too late to help you!