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My Son's minecraft is crashing when we open it. Here is the error report. We are on a MacBook.
Please advise, since he is dying to play today.

I posted this in the un-modded forum, a few days ago, but then realized that I had posted in the wrong place since he doe have a few mods.

I am a total minecraft neophyte, so please give me clear intstructions on what to do.


Thank you!!!





---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 4/7/13 8:55 AM
Description: Failed to start game

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:504)
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:160)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:406)
at net.minecraft.client.MinecraftAppletImpl.func_71384_a(SourceFile:56)
at net.minecraft.client.Minecraft.run(Minecraft.java:728)
at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.ClassNotFoundException: mod_Trivia
at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:210)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at cpw.mods.fml.common.ModClassLoader.loadClass(ModClassLoader.java:56)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at cpw.mods.fml.common.ModClassLoader.loadBaseModClass(ModClassLoader.java:86)
at cpw.mods.fml.common.modloader.ModLoaderModContainer.constructMod(ModLoaderModContainer.java:482)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
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(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
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:494)
... 5 more
Caused by: java.lang.NullPointerException
at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:199)
... 33 more


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

-- System Details --
Details:
Minecraft Version: 1.5
Operating System: Mac OS X (x86_64) version 10.6.8
Java Version: 1.6.0_35, Apple Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
Memory: 480757016 bytes (458 MB) / 534708224 bytes (509 MB) up to 1069416448 bytes (1019 MB)
JVM Flags: 3 total; -Xbootclasspath/a:/System/Library/PrivateFrameworks/JavaApplicationLauncher.framework/Resources/LauncherSupport.jar -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 v7.42 FML v5.0.24.582 Minecraft Forge 7.7.0.582 7 mods loaded, 7 mods active
mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed
FML [Forge Mod Loader] (coremods) Unloaded->Constructed
Forge [Minecraft Forge] (coremods) Unloaded->Constructed
mod_Aether [mod_Aether] (Aether-1.7.3-v1.01.zip) Unloaded->Errored
mod_Trivia [mod_Trivia] (Aether-1.7.3-v1.01.zip) Unloaded->Errored
JSOne_Studios.CampfireMod [Campfire Mod] (Campfire_Mod_2.5_for_1.5.zip) Unloaded->Constructed
DungeonPack [DungeonPack] (DungeonPack 1.5 v1.1 Universal.zip) Unloaded->Constructed
LWJGL: 2.4.2
OpenGL: NVIDIA GeForce 9400M OpenGL Engine GL version 2.1 NVIDIA-1.6.36, NVIDIA Corporation
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

Thank you. So he is saying he thinks he should "take off" his other mods (I'm not sure how to do that), except the forgeloader and then upgrade to 1.7.3. then put the Aether mod back on. Does that sound like the best plan?

Is there a way he could use his other mods like Campfire and Sheepers Creepers and Dungeon Pack if he's using 1.7.3?

Again, excuse my ignorance, I just want to help him so he can play this weekend.