ForgeModLoader refusing login

[Gee_Wisz]

Title: ForgeModLoader refusing login

Version: 0.5.1

OS: Windows 7 64-bit

Java Version: Java 7 64-bit

Description of Problem:

ForgeModLoader is refusing anyone to connect to my server.

Error Messages:

Disconnected from server

Internal Error

Error Log:

[sEVERE] [ForgeModLoader] Error handling login related packet - connection from (anyname) [/192.168.1.3:49880] refused

java.lang.NullPointerException

at gm.a(ServerConfigurationManager.java:114)

at it.completeConnection(NetLoginHandler.java:195)

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:179)

at it.c(NetLoginHandler.java:72)

at hu.a(ServerListenThread.java:56)

at ht.b(SourceFile:29)

at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:702)

at ho.r(DedicatedServer.java:270)

at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:598)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)

at fy.run(SourceFile:849)

2013-01-11 09:41:48 [WARNING] [Minecraft] Failed to handle packet for (anyname) [/192.168.1.3:49880]: java.lang.NullPointerException

java.lang.NullPointerException

at gm.a(ServerConfigurationManager.java:114)

at it.completeConnection(NetLoginHandler.java:195)

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:179)

at it.c(NetLoginHandler.java:72)

at hu.a(ServerListenThread.java:56)

at ht.b(SourceFile:29)

at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:702)

at ho.r(DedicatedServer.java:270)

at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:598)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)

at fy.run(SourceFile:849)