Minecraft Forums

So I've been looking at Aether 2 and decided that I should really get it. So I downloaded the jar file from the official site, and had it replace my (backed up) 1.5.2 client. So I installed it, using the instructions:
1.appdata, minecraft.jar, delete meta inf
2. put forge (made sure it was 1.5.1) files in the jar
3. (MUST BE AFTER 2) put in the render and player api files (required)
4. put aether mod in "mods" folder

But when I open it up I get THIS:



---- Minecraft Crash Report ----
// Why did you do that?

Time: 7/8/13 9:44 AM
Description: Failed to start game

cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: net/minecraftforge/client/event/RenderGameOverlayEvent
at cpw.mods.fml.common.LoadController.transition(LoadController.java:142)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:514)
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:160)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:407)
at net.minecraft.client.MinecraftAppletImpl.func_71384_a(SourceFile:56)
at net.minecraft.client.Minecraft.run(Minecraft.java:729)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: net/minecraftforge/client/event/RenderGameOverlayEvent
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.privateGetPublicMethods(Unknown Source)
at java.lang.Class.getMethods(Unknown Source)
at net.minecraftforge.event.EventBus.register(EventBus.java:28)
at net.aetherteam.aether.client.ClientProxy.registerTickHandler(ClientProxy.java:140)
at net.aetherteam.aether.Aether.preInit(Aether.java:218)
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 cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:515)
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 com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
at com.google.common.eventbus.EventBus.post(EventBus.java:267)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:165)
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 com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
at com.google.common.eventbus.EventBus.post(EventBus.java:267)
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:98)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:513)
... 5 more
Caused by: java.lang.ClassNotFoundException: net.minecraftforge.client.event.RenderGameOverlayEvent
at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:211)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 38 more
Caused by: java.lang.NullPointerException


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

-- System Details --
Details:
Minecraft Version: 1.5.1
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_03, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 466888144 bytes (445 MB) / 648740864 bytes (618 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v7.44 FML v5.1.8.611 Minecraft Forge 7.7.1.611 5 mods loaded, 5 mods active
mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized
FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized
Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized
Aether II [Aether II] (AetherII_Alpha_v1.0.2_MC1.5.1.zip) Unloaded->Constructed->Errored
MainMenuAPI [Main Menu API] (AetherII_Alpha_v1.0.2_MC1.5.1.zip) Unloaded->Constructed->Pre-initialized
LWJGL: 2.4.2
OpenGL: AMD Radeon HD 6750M GL version 4.1.10428 Compatibility Profile Context, ATI Technologies Inc.
Is Modded: Definitely; Client brand changed to 'forge,fml'
Type: Client (map_client.txt)
Texture Pack: Default
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null




I'm thinking I did parts 2-3 wrong? Was I supposed to open minecraft after step 2 but before step 3? I just wanted to play the mod, so if there's something obvious that I didn't see, then point it out.