Spotting problems in Crash Report

Quizer9O8 · July 10, 2016

I'm currently creating a mod called Mineralz. Every time I Run a client to test my mod I get this crash report:

---- Minecraft Crash Report ----
// Don't do that.

Time: 10-7-16 15:23
Description: There was a severe problem during mod loading that has caused the game to fail

net.minecraftforge.fml.common.LoaderException: java.lang.ClassNotFoundException: quizer9o8.com.mineralz.proxy.ClientProxy
at net.minecraftforge.fml.common.ProxyInjector.inject(ProxyInjector.java:81)
at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:548)
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.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:228)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:206)
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.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:135)
at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:524)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:210)
at net.minecraft.client.Minecraft.startGame(Minecraft.java:475)
at net.minecraft.client.Minecraft.run(Minecraft.java:384)
at net.minecraft.client.main.Main.main(Main.java:118)
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:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
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.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
at GradleStart.main(GradleStart.java:26)
Caused by: java.lang.ClassNotFoundException: quizer9o8.com.mineralz.proxy.ClientProxy
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at net.minecraftforge.fml.common.ModClassLoader.loadClass(ModClassLoader.java:65)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at net.minecraftforge.fml.common.ProxyInjector.inject(ProxyInjector.java:64)
... 39 more
Caused by: java.lang.NullPointerException
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
... 45 more


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

-- System Details --
Details:
Minecraft Version: 1.9.4
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_92, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 675542336 bytes (644 MB) / 1038876672 bytes (990 MB) up to 1038876672 bytes (990 MB)
JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.28 Powered by Forge 12.17.0.1976 4 mods loaded, 4 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UC	mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
UC	FML{8.0.99.99} [Forge Mod Loader] (forgeSrc-1.9.4-12.17.0.1976.jar) 
UC	Forge{12.17.0.1976} [Minecraft Forge] (forgeSrc-1.9.4-12.17.0.1976.jar) 
UE	mineralz{1.0.0} [Mineralz] (bin) 
Loaded coremods (and transformers): 
GL info: ' Vendor: 'Intel' Version: '4.4.0 - Build 10.18.15.4278' Renderer: 'Intel(R) HD Graphics 5500'

I'm using Eclipse to create my mod, I've checked if anything was out of place but I didn't found any errors. I don't know how to read crash reports so where should I look for next time?

Choonster · July 10, 2016

net.minecraftforge.fml.common.LoaderException: java.lang.ClassNotFoundException: quizer9o8.com.mineralz.proxy.ClientProxy
at net.minecraftforge.fml.common.ProxyInjector.inject(ProxyInjector.java:81)

at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:548)

ProxyInjector

is the class responsible for injecting the instance of your proxy class into the field you've annotated with

@SidedProxy

. In this case, it's throwing a

ClassNotFoundException

because the class you specified in the annotation (

quizer9o8.com.mineralz.proxy.ClientProxy

) doesn't exist.

MCrafterzz · July 10, 2016

It can't find your class so post your main class and you reference class(If you have one)

Quizer9O8 · July 10, 2016

I've changed the Reference from com.mineralz to com.quizer9o8.mineralz and imported everything over from the old map to the new one. It should work by now but it still doesn't reconize com.quizer9o8.mineralz.

EDIT: wow how did i not see this. I switched com. and quizer9o8 from place what caused the error. I've fixed it but now i'm getting this

---- Minecraft Crash Report ----
// This is a token for 1 free hug. Redeem at your nearest Mojangsta: [~~HUG~~]

Time: 10-7-16 16:32
Description: Initializing game

java.lang.NullPointerException: Initializing game
at com.quizer9o8.mineralz.init.MineralzItems.registerItem(MineralzItems.java:58)
at com.quizer9o8.mineralz.init.MineralzItems.register(MineralzItems.java:28)
at com.quizer9o8.mineralz.Mineralz.preInit(Mineralz.java:29)
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.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:568)
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.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:228)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:206)
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.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:135)
at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:586)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:249)
at net.minecraft.client.Minecraft.startGame(Minecraft.java:475)
at net.minecraft.client.Minecraft.run(Minecraft.java:384)
at net.minecraft.client.main.Main.main(Main.java:118)
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:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
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.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
at GradleStart.main(GradleStart.java:26)


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

-- Head --
Thread: Client thread
Stacktrace:
at com.quizer9o8.mineralz.init.MineralzItems.registerItem(MineralzItems.java:58)
at com.quizer9o8.mineralz.init.MineralzItems.register(MineralzItems.java:28)
at com.quizer9o8.mineralz.Mineralz.preInit(Mineralz.java:29)
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.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:568)
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.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:228)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:206)
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.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:135)
at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:586)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:249)
at net.minecraft.client.Minecraft.startGame(Minecraft.java:475)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.Minecraft.run(Minecraft.java:384)
at net.minecraft.client.main.Main.main(Main.java:118)
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:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
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.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
at GradleStart.main(GradleStart.java:26)

-- System Details --
Details:
Minecraft Version: 1.9.4
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_92, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 670618448 bytes (639 MB) / 1038876672 bytes (990 MB) up to 1038876672 bytes (990 MB)
JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.28 Powered by Forge 12.17.0.1976 4 mods loaded, 4 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCH	mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
UCH	FML{8.0.99.99} [Forge Mod Loader] (forgeSrc-1.9.4-12.17.0.1976.jar) 
UCH	Forge{12.17.0.1976} [Minecraft Forge] (forgeSrc-1.9.4-12.17.0.1976.jar) 
UCE	mineralz{1.0.0} [Mineralz] (bin) 
Loaded coremods (and transformers): 
GL info: ' Vendor: 'Intel' Version: '4.4.0 - Build 10.18.15.4278' Renderer: 'Intel(R) HD Graphics 5500'
Launched Version: 1.9.4
LWJGL: 2.9.4
OpenGL: Intel(R) HD Graphics 5500 GL version 4.4.0 - Build 10.18.15.4278, Intel
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: No
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)
CPU: net.minecraft.client.Minecraft$15@2154de40[code\]

Draco18s · July 10, 2016

Show your code, particularly MineralzItems.java

Quizer9O8 · July 10, 2016

package com.quizer9o8.mineralz.init;

import com.quizer9o8.mineralz.Reference;

import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.block.model.ModelResourceLocation;
import net.minecraft.item.Item;

public class MineralzItems {

private static final String mineralz = null;

//Items

public static Item tin_ingot;
public static Item copper_ingot;
public static Item bronze_ingot;
public static Item silver_ingot;
public static Item platinum_ingot;
public static Item silver_nugget;
public static Item platinum_nugget;
public static Item ruby;
public static Item sapphire;
public static Item amethyst;
public static Item onyx;

public static void register() {
	registerItem(tin_ingot); 
	registerItem(copper_ingot);
	registerItem(bronze_ingot);
	registerItem(silver_ingot);
	registerItem(platinum_ingot);
	registerItem(silver_nugget);
	registerItem(platinum_nugget);
	registerItem(ruby);
	registerItem(sapphire);
	registerItem(amethyst);
	registerItem(onyx);

}

public static void registerRenders() {
	registerRender(tin_ingot); 
	registerRender(copper_ingot);
	registerRender(bronze_ingot);
	registerRender(silver_ingot);
	registerRender(platinum_ingot);
	registerRender(silver_nugget);
	registerRender(platinum_nugget);
	registerRender(ruby);
	registerRender(sapphire);
	registerRender(amethyst);
	registerRender(onyx);
}

public static void registerItem(Item item) {
	Item setRegistryName, Gameregistry;
	System.out.println("Registered Item: " + item.getUnlocalizedName().substring(5));
}

public static void registerRender(Item item) {
	Minecraft.getMinecraft().getRenderItem().getItemModelMesher().register(item, 0, new ModelResourceLocation(Reference.MODID + ":" + item.getUnlocalizedName().substring(5), "inventory"));
}

}

Draco18s · July 10, 2016

	public static void registerItem(Item item) {
	Item setRegistryName, Gameregistry;
	System.out.println("Registered Item: " + item.getUnlocalizedName().substring(5));
}

That second line there, what do you expect it to do?

Secondly, unless these items are instantiated in another class, all of them are null.

Quizer9O8 · July 10, 2016

Got another crash report, man they keep coming:

---- Minecraft Crash Report ----
// Oops.

Time: 10-7-16 17:20
Description: Initializing game

java.lang.NullPointerException: Initializing game
at net.minecraft.item.crafting.CraftingManager.addRecipe(CraftingManager.java:271)
at net.minecraftforge.fml.common.registry.GameRegistry.addShapedRecipe(GameRegistry.java:223)
at net.minecraftforge.fml.common.registry.GameRegistry.addRecipe(GameRegistry.java:218)
at com.quizer9o8.mineralz.Recipes.init(Recipes.java:13)
at com.quizer9o8.mineralz.Mineralz.preInit(Mineralz.java:34)
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.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:568)
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.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:228)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:206)
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.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:135)
at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:586)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:249)
at net.minecraft.client.Minecraft.startGame(Minecraft.java:475)
at net.minecraft.client.Minecraft.run(Minecraft.java:384)
at net.minecraft.client.main.Main.main(Main.java:118)
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:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
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.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
at GradleStart.main(GradleStart.java:26)


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

-- Head --
Thread: Client thread
Stacktrace:
at net.minecraft.item.crafting.CraftingManager.addRecipe(CraftingManager.java:271)
at net.minecraftforge.fml.common.registry.GameRegistry.addShapedRecipe(GameRegistry.java:223)
at net.minecraftforge.fml.common.registry.GameRegistry.addRecipe(GameRegistry.java:218)
at com.quizer9o8.mineralz.Recipes.init(Recipes.java:13)
at com.quizer9o8.mineralz.Mineralz.preInit(Mineralz.java:34)
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.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:568)
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.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:228)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:206)
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.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:135)
at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:586)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:249)
at net.minecraft.client.Minecraft.startGame(Minecraft.java:475)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.Minecraft.run(Minecraft.java:384)
at net.minecraft.client.main.Main.main(Main.java:118)
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:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
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.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
at GradleStart.main(GradleStart.java:26)

-- System Details --
Details:
Minecraft Version: 1.9.4
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_92, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 814146192 bytes (776 MB) / 1038876672 bytes (990 MB) up to 1038876672 bytes (990 MB)
JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.28 Powered by Forge 12.17.0.1976 4 mods loaded, 4 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCH	mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
UCH	FML{8.0.99.99} [Forge Mod Loader] (forgeSrc-1.9.4-12.17.0.1976.jar) 
UCH	Forge{12.17.0.1976} [Minecraft Forge] (forgeSrc-1.9.4-12.17.0.1976.jar) 
UCE	mineralz{1.0.0} [Mineralz] (bin) 
Loaded coremods (and transformers): 
GL info: ' Vendor: 'Intel' Version: '4.4.0 - Build 10.18.15.4278' Renderer: 'Intel(R) HD Graphics 5500'
Launched Version: 1.9.4
LWJGL: 2.9.4
OpenGL: Intel(R) HD Graphics 5500 GL version 4.4.0 - Build 10.18.15.4278, Intel
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: No
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)
CPU: net.minecraft.client.Minecraft$15@69173bb7

jeffryfisher · July 10, 2016

java.lang.NullPointerException: Initializing game
at net.minecraft.item.crafting.CraftingManager.addRecipe(CraftingManager.java:271)

By this point, you should have an idea what this kind of error means and how to go about investigating. Hint: When it is on your screen, you can (in Eclipse at least) click directly on the "java:271" and be taken there to see what that line is.

If it's not obvious what's null, then set a breakpoint there and re-run in the debugger. Better yet, look at the call stack and set a break somewhere upstream so you can step into the chain, looking at variable and argument values along the way.

Also: Sometimes it helps to chop a complex statement into pieces that assign subexpressions to explicit local variables that can be examined in the debugger.

The debugger is an essential tool. Learn to use it. Try to exhaust what you can learn with such tools before running to the forum here. You'll become a better developer if you master more of the tools at your fingertips.

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