Minecraft Technik mod pack indításakor ez a hibaüzenet jelenik meg. Mi a megoldás?

Mods loaded: 1

ModLoader 1.2.5

Minecraft has crashed!

----------------------

Minecraft has stopped running because it encountered a problem.

--- BEGIN ERROR REPORT 9f578458 --------

Generated 2012.07.17. 0:50

Minecraft: Minecraft 1.2.5

OS: Windows 7 (x86) version 6.1

Java: 1.7.0_04, Oracle Corporation

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

LWJGL: 2.4.2

OpenGL: GeForce 8800 GT/PCIe/SSE2/3DNOW! version 3.3.0, NVIDIA Corporation

java.lang.NullPointerException

at java.io.Reader.<init>(Unknown Source)

at java.io.InputStreamReader.<init>(Unknown Source)

at adn.a(SourceFile:62)

at adn.a(SourceFile:99)

at net.minecraft.client.Minecraft.a(Minecraft.java:385)

at net.minecraft.client.Minecraft.run(Minecraft.java:732)

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

--- END ERROR REPORT 76530a05 ----------