My tutorial mod is crashing...

kmccmk9 · July 30, 2013

Hello, I am an experienced plugin developer for bukkit and spout. However, when going through the tutorial for basic adding of a crafting recipe. The mod now crashes my game on launch. Below is the error and my code. The error is pointing to line 35 of the Generic class which is just then ItemStack commandBlock. I'm not sure what is wrong with it. Thanks for any help!

Error:

---- Minecraft Crash Report ----
// Oh - I know what I did wrong!

Time: 7/30/13 4:07 PM
Description: There was a severe problem during mod loading that has caused the game to fail

cpw.mods.fml.common.LoaderException: java.lang.NoSuchFieldError: commandBlock
at cpw.mods.fml.common.LoadController.transition(LoadController.java:149)
at cpw.mods.fml.common.Loader.initializeMods(Loader.java:698)
at cpw.mods.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:232)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:506)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:796)
at net.minecraft.client.main.Main.main(SourceFile:101)
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:57)
at net.minecraft.launchwrapper.Launch.main(Launch.java:18)
Caused by: java.lang.NoSuchFieldError: commandBlock
at tutorial.generic.Generic.load(Generic.java:35)
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:540)
at sun.reflect.GeneratedMethodAccessor1.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:313)
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.sendEventToModContainer(LoadController.java:194)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:174)
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:313)
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:105)
at cpw.mods.fml.common.Loader.initializeMods(Loader.java:697)
... 10 more


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

-- System Details --
Details:
Minecraft Version: 1.6.2
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 50955944 bytes (48 MB) / 115183616 bytes (109 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
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 v8.04 FML v6.2.35.804 Minecraft Forge 9.10.0.804 18 mods loaded, 18 mods active
mcp{8.04} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized
FML{6.2.35.804} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized
Forge{9.10.0.804} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized
BetterSprinting{v10} [better Sprinting Coremod] (coremods) Unloaded->Constructed->Pre-initialized->Initialized
CodeChickenCore{0.9.0.0} [CodeChicken Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized
NotEnoughItems{1.6.0.4} [Not Enough Items] (NotEnoughItems 1.6.0.4.jar) Unloaded->Constructed->Pre-initialized->Initialized
mod_bspkrsCore{v3.03(1.6.2)} [bspkrsCore] ([1.6.2]bspkrsCorev3.03.zip) Unloaded->Constructed->Pre-initialized->Initialized
DamageIndicatorsMod{2.8.5.1} [Damage Indicators] (1.6.2 DamageIndicators v2.8.5.1.zip) Unloaded->Constructed->Pre-initialized->Initialized
mod_ReiMinimap{v3.4_01 [1.6.2]} [mod_ReiMinimap] ([1.6.2]ReiMinimap_v3.4_01.zip) Unloaded->Constructed->Pre-initialized->Initialized
TreeCapitator{Forge 1.6.2.r01} [TreeCapitator] ([1.6.2]TreeCapitator.Forge.1.6.2.r01.Uni.CoreMod.jar) Unloaded->Constructed->Pre-initialized->Initialized
Backpack{1.12.13} [backpack] (backpack-1.12.13-1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized
buddycam{1.6.2 a} [buddyCam] (buddycam-1.6.2_a.zip) Unloaded->Constructed->Pre-initialized->Initialized
ComputerCraft{1.55} [ComputerCraft] (ComputerCraft1.55.zip) Unloaded->Constructed->Pre-initialized->Initialized
CCTurtle{1.55} [ComputerCraft Turtles] (ComputerCraft1.55.zip) Unloaded->Constructed->Pre-initialized->Initialized
RopesPlus{1.4.3} [Ropes+] (RopePlus_1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized
row{1.6.2-13.07.30-0} [Rails of War] (RoW-162-130730-0.zip) Unloaded->Constructed->Pre-initialized->Initialized
Generic{0.0.0} [Generic] (Tutorial.jar) Unloaded->Constructed->Pre-initialized->Errored
AS_UpdateCheck{1.1.0} [AtomicStryker Update Check Mod] (UpdateCheckerMod_1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized

Code:

package tutorial.generic;

import net.minecraft.block.Block;
import net.minecraft.item.ItemStack;
import cpw.mods.fml.common.Mod;
import cpw.mods.fml.common.Mod.EventHandler;
import cpw.mods.fml.common.Mod.Instance;
import cpw.mods.fml.common.SidedProxy;
import cpw.mods.fml.common.event.FMLInitializationEvent;
import cpw.mods.fml.common.event.FMLPostInitializationEvent;
import cpw.mods.fml.common.event.FMLPreInitializationEvent;
import cpw.mods.fml.common.network.NetworkMod;
import cpw.mods.fml.common.registry.GameRegistry;

@Mod(modid="Generic", name="Generic", version="0.0.0")
@NetworkMod(clientSideRequired=true, serverSideRequired=false)
public class Generic {

        // The instance of your mod that Forge uses.
        @Instance("Generic")
        public static Generic instance;
        
        // Says where the client and server 'proxy' code is loaded.
        @SidedProxy(clientSide="tutorial.generic.client.ClientProxy", serverSide="tutorial.generic.CommonProxy")
        public static CommonProxy proxy;
        
        @EventHandler
        public void preInit(FMLPreInitializationEvent event) {
                // Stub Method
        }
        
        @EventHandler
        public void load(FMLInitializationEvent event) {
                proxy.registerRenderers();
                ItemStack commandStack = new ItemStack(Block.commandBlock);
            	ItemStack redstoneStack = new ItemStack(Block.redstoneWire);
            	ItemStack repeaterStack = new ItemStack(Block.redstoneRepeaterIdle);

            	GameRegistry.addRecipe(commandStack, "xy", "yx", 'x', redstoneStack, 'y', repeaterStack);
        }
        
        @EventHandler
        public void postInit(FMLPostInitializationEvent event) {
                // Stub Method
        }
}

hydroflame · July 30, 2013

yay go forge , boo bukkit

Below is the error and my code.

but you forgot to post it

edit

can we have logs (i dont know just by looking at it)

kmccmk9 · July 30, 2013

yay go forge , boo bukkit

Below is the error and my code.

but you forgot to post it

edit

can we have logs (i dont know just by looking at it)

Ya sorry about that. I program on one computer and test on the other so I had to switch back and forth and edit my posts a few times to that the rror code and java code could be in the post.

hydroflame · July 30, 2013

which IDE are you using ?

the error is

NoSuchFieldError meaning at compile time it find it, but at run time it doesnt, here with forge we have something called obfuscation (something i dont know if bukkit does)

but basicly this mean that we will change the names back to their original when were done coding

so net.minecraft.client.Minecraft class becomes "jd" (or something similar, 2-3 letter), basicly if you're using a special IDE you might be doing things weirdly and it obfuscate the code before you run it, meaning that commandBlock becomes something else

eclipse ?

kmccmk9 · July 30, 2013

which IDE are you using ?

the error is

NoSuchFieldError meaning at compile time it find it, but at run time it doesnt, here with forge we have something called obfuscation (something i dont know if bukkit does)

but basicly this mean that we will change the names back to their original when were done coding

so net.minecraft.client.Minecraft class becomes "jd" (or something similar, 2-3 letter), basicly if you're using a special IDE you might be doing things weirdly and it obfuscate the code before you run it, meaning that commandBlock becomes something else

eclipse ?

That is what I'm using. However, I should note that I am having to export my jar file as Eclipse can't run the modded minecraft for some strange reason.

hydroflame · July 30, 2013

oh i know

yeah basicly you're not following the correct procedure to release a mod

ok so once your code is all good (and it works in eclipse)

goto mcp/

run recompile.bat (.sh if you're on linux)

run reobfuscate.bat (.sh if you're on linux)

goto mcp/reobf/minecraft/

zip everythign in there (ZIP, not rar, 7z, tar.gz, tar.bz etc)

rename the file to yourmodname.jar

place that jar into .minecraft/mod

run minecraft

kmccmk9 · July 30, 2013

oh i know

yeah basicly you're not following the correct procedure to release a mod

ok so once your code is all good (and it works in eclipse)

goto mcp/

run recompile.bat (.sh if you're on linux)

run reobfuscate.bat (.sh if you're on linux)

goto mcp/reobf/minecraft/

zip everythign in there (ZIP, not rar, 7z, tar.gz, tar.bz etc)

rename the file to yourmodname.jar

place that jar into .minecraft/mod

run minecraft

Okay so I am in the process of doing what you said. But I have to do this whole thing every time I want to test my mod?

hydroflame · July 30, 2013

no in eclispe you can press the green arrow and everything should be fine

kmccmk9 · July 30, 2013

no in eclispe you can press the green arrow and everything should be fine

It isn't though. It won't run the modded minecraft. Otherwise I would have done that like the tutorial said. I have 1.6.2 installed and everything.

hydroflame · July 30, 2013

I should note that I am having to export my jar file as Eclipse can't run the modded minecraft for some strange reason.

i misunderstood that for, "im trying to make a release"

in your eclipse workspace do you have the net.* package ? (net.minecraft.*)

kmccmk9 · July 30, 2013

I should note that I am having to export my jar file as Eclipse can't run the modded minecraft for some strange reason.

i misunderstood that for, "im trying to make a release"

in your eclipse workspace do you have the net.* package ? (net.minecraft.*)

I do. The error I'm getting is actually that of JVM.

EDIT: Sometimes it works just fine. When it does work and the wrapped minecraft is loaded, my mod is listed but the crafting recipe does not work.

kmccmk9 · July 30, 2013

I should note that I am having to export my jar file as Eclipse can't run the modded minecraft for some strange reason.

i misunderstood that for, "im trying to make a release"

in your eclipse workspace do you have the net.* package ? (net.minecraft.*)

Everything seems to work now except the crafting recipe.

kmccmk9 · July 31, 2013

which IDE are you using ?

the error is

NoSuchFieldError meaning at compile time it find it, but at run time it doesnt, here with forge we have something called obfuscation (something i dont know if bukkit does)

but basicly this mean that we will change the names back to their original when were done coding

so net.minecraft.client.Minecraft class becomes "jd" (or something similar, 2-3 letter), basicly if you're using a special IDE you might be doing things weirdly and it obfuscate the code before you run it, meaning that commandBlock becomes something else

eclipse ?

Okay I did everything you suggested. Recompiled and reobed. But I am still getting this error when using the files exported to the reobf folder.

---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 7/30/13 9:09 PM
Description: There was a severe problem during mod loading that has caused the game to fail

cpw.mods.fml.common.LoaderException: java.lang.NoSuchFieldError: commandBlock
at cpw.mods.fml.common.LoadController.transition(LoadController.java:149)
at cpw.mods.fml.common.Loader.initializeMods(Loader.java:698)
at cpw.mods.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:232)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:506)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:796)
at net.minecraft.client.main.Main.main(SourceFile:101)
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:57)
at net.minecraft.launchwrapper.Launch.main(Launch.java:18)
Caused by: java.lang.NoSuchFieldError: commandBlock
at tutorial.generic.Generic.load(Generic.java:35)
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:540)
at sun.reflect.GeneratedMethodAccessor1.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:313)
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.sendEventToModContainer(LoadController.java:194)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:174)
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:313)
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:105)
at cpw.mods.fml.common.Loader.initializeMods(Loader.java:697)
... 10 more


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

-- System Details --
Details:
Minecraft Version: 1.6.2
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 52324272 bytes (49 MB) / 115990528 bytes (110 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
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 v8.04 FML v6.2.35.804 Minecraft Forge 9.10.0.804 19 mods loaded, 19 mods active
mcp{8.04} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized
FML{6.2.35.804} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized
Forge{9.10.0.804} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized
BetterSprinting{v10} [better Sprinting Coremod] (coremods) Unloaded->Constructed->Pre-initialized->Initialized
CodeChickenCore{0.9.0.0} [CodeChicken Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized
NotEnoughItems{1.6.0.4} [Not Enough Items] (NotEnoughItems 1.6.0.4.jar) Unloaded->Constructed->Pre-initialized->Initialized
mod_bspkrsCore{v3.03(1.6.2)} [bspkrsCore] ([1.6.2]bspkrsCorev3.03.zip) Unloaded->Constructed->Pre-initialized->Initialized
CommandBlockRecipe{0.0.1} [CommandBlockRecipe] (1.6.2 CommandBlockRecipe.zip) Unloaded->Constructed->Pre-initialized->Initialized
DamageIndicatorsMod{1.0} [Damage Indicators] (1.6.2 DamageIndicators v2.8.5.1.zip) Unloaded->Constructed->Pre-initialized->Initialized
mod_ReiMinimap{v3.4_01 [1.6.2]} [mod_ReiMinimap] ([1.6.2]ReiMinimap_v3.4_01.zip) Unloaded->Constructed->Pre-initialized->Initialized
TreeCapitator{Forge 1.6.2.r01} [TreeCapitator] ([1.6.2]TreeCapitator.Forge.1.6.2.r01.Uni.CoreMod.jar) Unloaded->Constructed->Pre-initialized->Initialized
Backpack{1.12.13} [backpack] (backpack-1.12.13-1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized
buddycam{1.6.2 a} [buddyCam] (buddycam-1.6.2_a.zip) Unloaded->Constructed->Pre-initialized->Initialized
ComputerCraft{1.55} [ComputerCraft] (ComputerCraft1.55.zip) Unloaded->Constructed->Pre-initialized->Initialized
CCTurtle{1.55} [ComputerCraft Turtles] (ComputerCraft1.55.zip) Unloaded->Constructed->Pre-initialized->Initialized
RopesPlus{1.4.3} [Ropes+] (RopePlus_1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized
row{1.6.2-13.07.30-0} [Rails of War] (RoW-162-130730-0.zip) Unloaded->Constructed->Pre-initialized->Initialized
Generic{0.0.0} [Generic] (Tutorial.jar) Unloaded->Constructed->Pre-initialized->Errored
AS_UpdateCheck{1.1.0} [AtomicStryker Update Check Mod] (UpdateCheckerMod_1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized

My mod does work fully from within eclipse.

kmccmk9 · July 31, 2013

Update: It appears that when I recompile there are 100 errors in doing so. Mostly dealing with icons.

GotoLink · July 31, 2013

I would recommend changing your modid to lower case and something less...generic...

OwnAgePau · August 1, 2013

are these errors you get when recompile are all with IconRegister? and are they inside minecraft classes? because i keep getting that too.

Flenix · August 1, 2013

off-topic, but nice to see another Spouter has come here. I promise you'll enjoy it, everything is so much smoother here than it was in Spout.

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My tutorial mod is crashing...

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