Minecraft crashes upon joining multiplayer server

[DrewbieCanubie]

I have made sure to install Forge, Optifine, and any other mods on the host server.  The game works in singleplayer just fine.  I updated the video card drivers for the computer that crashes and also Java.  Here is the error report:

 

      Minecraft has crashed!     

      ----------------------     

 

Minecraft has stopped running because it encountered a problem; Unexpected error

This error has been saved to C:\Documents and Settings\Deanna\Application Data\.minecraft\crash-reports\crash-2012-09-29_08.53.10-client.txt for your convenience. Please include a copy of this file if you report this crash to anyone.

 

 

 

--- BEGIN ERROR REPORT 9b31543 --------

Generated 9/29/12 8:53 AM

 

- Minecraft Version: 1.3.2

- Operating System: Windows XP (x86) version 5.1

- Java Version: 1.7.0_07, Oracle Corporation

- Java VM Version: Java HotSpot Client VM (mixed mode), Oracle Corporation

- Memory: 454482104 bytes (433 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)

- JVM Flags: 2 total; -Xms512m -Xmx1024m

- LWJGL: 2.4.2

- OpenGL: Intel 945GM GL version 1.4.0 - Build 7.14.10.4926, Intel

- Is Modded: Definitely; 'forge,fml'

- Type: Client

- Texture Pack: Steelfeathers Enchanted Pack_v1.4.zip

- Profiler Position: N/A (disabled)

 

java.lang.NullPointerException

at cpw.mods.fml.common.network.FMLNetworkHandler.bindNetworkId(FMLNetworkHandler.java:261)

at cpw.mods.fml.common.network.ModIdentifiersPacket.execute(ModIdentifiersPacket.java:67)

at cpw.mods.fml.common.network.FMLNetworkHandler.handleFMLPacket(FMLNetworkHandler.java:89)

at cpw.mods.fml.common.network.FMLNetworkHandler.handlePacket250Packet(FMLNetworkHandler.java:59)

at asv.a(NetClientHandler.java:1288)

at ce.a(SourceFile:56)

at bb.b(TcpConnection.java:438)

at asv.d(NetClientHandler.java:99)

at asy.c(SourceFile:69)

at net.minecraft.client.Minecraft.l(Minecraft.java:1484)

at net.minecraft.client.Minecraft.J(Minecraft.java:831)

at net.minecraft.client.Minecraft.run(Minecraft.java:761)

at java.lang.Thread.run(Unknown Source)

--- END ERROR REPORT fdd63d71 ----------

 

 

[DrewbieCanubie]

My wife & I play together () and I host the lan server on my laptop.  She can play singleplayer, however if she tries to connect to my server it crashes.  I noticed that I'm running forge version 4.1 and she is using 4.0.  Could this be the issue?  Any help is greatly appreciated!!

[SanAndreaP]

you should both have the actual recommented universal build. And yes, that is most likely the cause, that you're running different minor versions of forge.

[DrewbieCanubie]

Thank you!  I will attempt to fix the problem.  Hope it works