cant log in

cant get into minecraft

i was just going to play minecraft Aether and i did all the right stuff for modding
and when i logged in this popped up:

Minecraft Version: 1.5.1
	Operating System: Windows XP (x86) version 5.1
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 456592208 bytes (435 MB) / 518979584 bytes (494 MB) up to 1060306944 bytes (1011 MB)
	JVM Flags: 2 total; -Xms512m -Xmx1046m
	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 v5.1.43.682 Minecraft Forge 7.7.2.682 5 mods loaded, 5 mods active
	mcp{7.44} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed
	FML{5.1.43.682} [Forge Mod Loader] (coremods) Unloaded->Constructed
	Forge{7.7.2.682} [Minecraft Forge] (coremods) Unloaded->Constructed
	mod_Trivia{Not available} [mod_Trivia] (Aether1.7.3 V1.02.zip) Unloaded->Errored
	mod_Aether{Not available} [mod_Aether] (Aether1.7.3 V1.02.zip) Unloaded->Errored
	LWJGL: 2.4.2
	OpenGL: Intel 965/963 Graphics Media Accelerator GL version 2.0.0 - Build 7.15.10.5076, Intel
	Is Modded: Definitely; Client brand changed to 'fml,forge'
	Type: Client (map_client.txt)
	Texture Pack: Default
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

cpw.mods.fml.common.LoaderException: java.lang.ClassNotFoundException: mod_Trivia
	at cpw.mods.fml.common.LoadController.transition(LoadController.java:142)
	at cpw.mods.fml.common.Loader.loadMods(Loader.java:513)
	at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:160)
	at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:410)
	at net.minecraft.client.MinecraftAppletImpl.func_71384_a(SourceFile:56)
	at net.minecraft.client.Minecraft.run(Minecraft.java:732)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: mod_Trivia
	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:238)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at cpw.mods.fml.common.ModClassLoader.loadClass(ModClassLoader.java:56)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Unknown Source)
	at cpw.mods.fml.common.ModClassLoader.loadBaseModClass(ModClassLoader.java:86)
	at cpw.mods.fml.common.modloader.ModLoaderModContainer.constructMod(ModLoaderModContainer.java:483)
	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:503)
	... 5 more
Caused by: java.lang.NullPointerException
	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:227)
	... 33 more
--- END ERROR REPORT 2ec891ec ----------

please help.