Hi, I have Minecraft 1.7.4, stepped back to 1.7.2 as per an answer to an earlier question (Thanx again for that) and opened forge 10.12.0.1002 installer.  Then I loaded Minecraft 1.7.2 and chose create new world.  I created and it crashed.  The crash report is below.  What did I do wrong and how can I fix it?

 

---- Minecraft Crash Report ----

// Don't be sad. I'll do better next time, I promise!

 

Time: 22/01/14 15:43

Description: Unexpected error

 

java.lang.NullPointerException: Unexpected error

at cpw.mods.fml.client.FMLClientHandler.setPlayClient(FMLClientHandler.java:699)

at net.minecraft.client.network.NetHandlerPlayClient.<init>(NetHandlerPlayClient.java:221)

at net.minecraft.client.network.NetHandlerLoginClient.func_147232_a(NetHandlerLoginClient.java:110)

at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:187)

at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:2056)

at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:952)

at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:869)

at net.minecraft.client.main.Main.main(SourceFile:103)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:134)

at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

 

 

A detailed walkthrough of the error, its code path and all known details is as follows:

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

 

-- System Details --

Details:

Minecraft Version: 1.7.2

Operating System: Windows 8 (x86) version 6.2

Java Version: 1.7.0_51, Oracle Corporation

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

Memory: 185757624 bytes (177 MB) / 319066112 bytes (304 MB) up to 518979584 bytes (494 MB)

JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M

AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95

FML: MCP v9.01-pre FML v7.2.69.1002 Minecraft Forge 10.12.0.1002 3 mods loaded, 3 mods active

mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

FML{7.2.69.1002} [Forge Mod Loader] (forge-1.7.2-10.12.0.1002.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

Forge{10.12.0.1002} [Minecraft Forge] (forge-1.7.2-10.12.0.1002.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

Launched Version: 1.7.2-Forge10.12.0.1002

LWJGL: 2.9.0

OpenGL: Intel® HD Graphics 4000 GL version 4.0.0 - Build 10.18.10.3379, Intel

Is Modded: Definitely; Client brand changed to 'fml,forge'

Type: Client (map_client.txt)

Resource Packs: []

Current Language: English (US)

Profiler Position: N/A (disabled)

Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

Anisotropic Filtering: Off (1)

 

Cheers

Update Forge.