Problems with my Tekkit lite server please help

[iDwaajt]

I'm having some troubles with my Tekkit lite server. But i don't really understand all that gibberish in the server log. I see that my server is online but everytime i wan't to connect it's says internal server error. This is the server log.

2013-05-12 14:20:06 [iNFO] Starting minecraft server version 1.4.7

2013-05-12 14:20:16 [iNFO] Loading properties

2013-05-12 14:20:16 [iNFO] Default game type: SURVIVAL

2013-05-12 14:20:16 [iNFO] Generating keypair

2013-05-12 14:20:17 [iNFO] Starting Minecraft server on 25.168.38.209:25565

2013-05-12 14:20:21 [iNFO] Preparing level "world"

2013-05-12 14:20:21 [iNFO] Preparing start region for level 0

2013-05-12 14:20:22 [iNFO] Done (1,135s)! For help, type "help" or "?"

2013-05-12 14:20:55 [iNFO] /25.168.38.209:49973 lost connection

2013-05-12 14:20:58 [iNFO] User iDwaajt connecting with mods [MFReloaded|CompatSufficientBiomes, OCS, factorization.misc, RedPowerWiring, OmniTools, BuildCraft|Transport, RedPowerCompat, AdvancedPowerManagement, WR-CBE|Core, MFReloaded|CompatIC2, factorization.dimensionalSlice, RedPowerLogic, ThermalExpansion|Energy, WR-CBE|RedPower, EnderStorage, AdvancedMachines, MFReloaded|CompatPams, mmmPowersuits, IronChest, MFReloaded|CompatRP2, BuildCraft|Energy, ImmibisCore, EE3, LogisticsPipes|Main, DimensionalDoors, ChickenChunks, factorization, RedPowerLighting, AppliedEnergistics, mod_bspkrsCore, RedPowerBase, MFReloaded|CompatExtraBiomes, MFReloaded, ThermalExpansion, NetherOres, BuildCraft|Silicon, weaponmod, APUnofficial, ThermalExpansion|Transport, IC2NuclearControl, BuildCraft|Core, ThermalExpansion|Factory, CompactSolars, DimensionalAnchors, MFReloaded|CompatForestry, IC2, StevesCarts, Mystcraft, WR-CBE|Addons, ComputerCraft, TreeCapitator, BuildCraft|Factory, RedPowerMachine, RedPowerCore, MFReloaded|CompatThaumcraft, AdvancedRepulsionSystems, CCTurtle, Tubestuff, RedPowerControl, MFReloaded|CompatTwilightForest, MFReloaded|CompatSoulShards, MFReloaded|CompatVanilla, BuildCraft|Builders, RedPowerWorld, MFReloaded|CompatXyCraft, PowerConverters]

2013-05-12 14:20:58 [iNFO] iDwaajt[/25.168.38.209:49974] logged in with entity id 53 at (-767.8779279148408, 81.0, -3696.5586972716847)

2013-05-12 14:20:58 [iNFO] Disconnecting iDwaajt [/25.168.38.209:49974]: Internal server error

2013-05-12 14:20:58 [WARNING] Failed to handle packet for iDwaajt [/25.168.38.209:49974]: java.lang.NullPointerException

java.lang.NullPointerException

    at gm.a(ServerConfigurationManager.java:114)

    at it.completeConnection(NetLoginHandler.java:198)

    at cpw.mods.fml.common.network.FMLNetworkHandler.handleClientConnection(FMLNetworkHandler.java:153)

    at cpw.mods.fml.common.network.FMLNetworkHandler.onConnectionReceivedFromClient(FMLNetworkHandler.java:107)

    at it.d(NetLoginHandler.java:182)

    at it.c(NetLoginHandler.java:75)

    at hu.a(ServerListenThread.java:56)

    at ht.b(SourceFile:29)

    at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:703)

    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)