I recently back dated Minecraft using MCNostalgia to 1.2.5. I did this because there are more mods to use with this. I installed MCPatcher 2.4.2, Forge 3.1.2.90, Modloader 1.2.5, Modloader MP 1.2.5 v1, and the correct version of Buildcraft. I followed a video, did exactly what it says to do, and when I try to create a level, it shows the dirt background for a while. It then says "switching level..." and eventually shows a black screen or crashes. When I try to open the minecraft.jar in the .minecraft folder, It also says that it is invalid and corrupted. What did I do wrong?
Launching C:\Users\Brayden\AppData\Roaming\.minecraft\bin\minecraft.jar
java -cp C:\Users\Brayden\AppData\Roaming\.minecraft\bin/minecraft.jar;C:\Users\Brayden\AppData\Roaming\.minecraft\bin/lwjgl.jar;C:\Users\Brayden\AppData\Roaming\.minecraft\bin/lwjgl_util.jar;C:\Users\Brayden\AppData\Roaming\.minecraft\bin/jinput.jar; -Djava.library.path=C:\Users\Brayden\AppData\Roaming\.minecraft\bin\natives -Xmx1024M -Xms512M net.minecraft.client.Minecraft
27 achievements
182 recipes
LWJGL Version: 2.4.2
ModLoader 1.2.5 Initializing...
Mod Initialized: mod_MinecraftForge 3.1.2.90
Mod Initialized: mod_ModLoaderMp 1.2.5v1
Mod Initialized: mod_BuildCraftCore 3.1.5
Mod Initialized: mod_BuildCraftBuilders 3.1.5
Mod Initialized: mod_BuildCraftEnergy 3.1.5
Mod Initialized: mod_BuildCraftFactory 3.1.5
Mod Initialized: mod_BuildCraftTransport 3.1.5
Mod Initialized: mod_BuildCraftSilicon 3.1.5
MinecraftForge v3.1.2.90 Initialized
Aug 22, 2012 7:33:59 PM forge.ForgeHooks <clinit>
INFO: MinecraftForge v3.1.2.90 Initialized
Mod Loaded: mod_MinecraftForge 3.1.2.90
Mod Loaded: mod_ModLoaderMp 1.2.5v1
Mod Loaded: mod_BuildCraftCore 3.1.5
Mod Loaded: mod_BuildCraftBuilders 3.1.5
Mod Loaded: mod_BuildCraftEnergy 3.1.5
Mod Loaded: mod_BuildCraftFactory 3.1.5
Mod Loaded: mod_BuildCraftTransport 3.1.5
Mod Loaded: mod_BuildCraftSilicon 3.1.5
ModLoaderMP 1.0.0 Initialized
Starting BuildCraft 3.1.5
Copyright © SpaceToad, 2011-2012
http://www.mod-buildcraft.com
Done.
WARNING: Found unknown Windows version: Windows 7
Attempting to use default windows plug-in.
Loading: net.java.games.input.DirectAndRawInputEnvironmentPlugin
Starting up SoundSystem...
Initializing LWJGL OpenAL
(The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
OpenAL initialized.
java.lang.NoSuchMethodError: alb.getSaveFolder()Ljava/lang/String;
at aia.a(AnvilSaveHandler.java:21)
at xd.d(World.java:362)
at xd.<init>(World.java:345)
at xd.<init>(World.java:277)
at net.minecraft.client.Minecraft.a(Minecraft.java:1930)
at xh.a(SourceFile:163)
at vp.a(SourceFile:74)
at xh.a(SourceFile:233)
at vp.f(SourceFile:122)
at vp.i(SourceFile:110)
at net.minecraft.client.Minecraft.k(Minecraft.java:1561)
at net.minecraft.client.Minecraft.x(Minecraft.java:819)
at net.minecraft.client.Minecraft.run(Minecraft.java:747)
at java.lang.Thread.run(Unknown Source)
Stopping!
SoundSystem shutting down...
Author: Paul Lamb, www.paulscode.com
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