Gonna drop this little problem right here....

[FatmanPWNS]

Hey guys, I'm gonna drop this problem right here and see if anyone might be able to take a gander at tit. I'm trying to start up a private server and while the server is up, when I joined it, told me I needed to download 4 mods. Did some looking and updated it all like I read on the forums and it still wasn't showing the mods I needed for the new server. So, I looked for the mods manually and placed them in my mods folder, loaded up my game got the lovely mojang screen and then BAM!, I went nuclear. Immediately after the Mojang screen I got this message:

--- BEGIN ERROR REPORT 643ec4ca --------

Generated 12/23/12 8:33 PM

Minecraft: Minecraft 1.2.5

OS: Windows XP (x86) version 5.1

Java: 1.7.0_10, Oracle Corporation

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

LWJGL: 2.4.2

OpenGL: ATI Radeon HD 2400 Pro version 3.3.10907 Compatibility Profile Context, ATI Technologies Inc.

java.lang.NullPointerException

at cpw.mods.fml.common.modloader.ModLoaderModContainer.init(ModLoaderModContainer.java:356)

at cpw.mods.fml.common.Loader.modInit(Loader.java:273)

at cpw.mods.fml.common.Loader.initializeMods(Loader.java:628)

at cpw.mods.fml.client.FMLClientHandler.onLoadComplete(FMLClientHandler.java:223)

at net.minecraft.client.Minecraft.a(Minecraft.java:429)

at net.minecraft.client.Minecraft.run(Minecraft.java:738)

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

--- END ERROR REPORT a969391f ----------

So....did I break it?

[ErusPrime]

my guess is you downloaded the wrong version of those 4 mods.

[Graziservers]

I've had this same issue using the technic pack. Not sure what causes it. I restarted my server and launcher and it went fine.