Forge 3.3.7 NoClassDef error

[Gibbynator]

I've made a few items for my mod, and as far as I can tell, they don't generate any errors. However, one of the items requires IC2 (it is an electric tool). So, I copy industrialcraft 1.95 client.jar from the mods folder of Tekkit to the mods folder in MCP/jars/mods. Then, I get this error. So I figure I need to install Risu's Modloader, even though forge SAYS it has it included. Still getting the error below. Of note: I included net.minecraft.src.ic2.api in my source code. I doubt that would be causing a noclassdef error. Anything I did wrong? If you want to check my code, https://github.com/Gibbycraft/Gibbycraft-mod/tree/master/net

3 mods loaded

Minecraft Forge 3.3.7.135

FML v2.2.48.135

Forge Mod Loader version 2.2.48.135 for Minecraft 1.2.5

    mod_Aragami : Loaded (src)

    mod_Gibbycraft : Loaded (src)

    mod_MinecraftForge : Loaded (src)

 

 

      Minecraft has crashed! 

      ---------------------- 

 

Minecraft has stopped running because it encountered a problem.

 

 

 

 

--- BEGIN ERROR REPORT 25e7fe59 --------

Generated 7/2/12 9:49 PM

 

Minecraft: Minecraft 1.2.5

OS: Windows 7 (amd64) version 6.1

Java: 1.7.0_03, Oracle Corporation

VM: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation

LWJGL: 2.4.2

OpenGL: ATI Mobility Radeon HD 4870  version 3.3.10151 Compatibility Profile Context, ATI Technologies Inc.

 

cpw.mods.fml.common.LoaderException: cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: forge/IConnectionHandler

    at cpw.mods.fml.common.Loader.load(Loader.java:436)

    at cpw.mods.fml.common.Loader.loadMods(Loader.java:592)

    at cpw.mods.fml.client.FMLClientHandler.onPreLoad(FMLClientHandler.java:193)

    at net.minecraft.client.Minecraft.startGame(Minecraft.java:383)

    at net.minecraft.client.Minecraft.run(Minecraft.java:735)

    at java.lang.Thread.run(Unknown Source)

Caused by: cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: forge/IConnectionHandler

    at cpw.mods.fml.common.Loader.loadModClass(Loader.java:527)

    at cpw.mods.fml.common.Loader.attemptFileLoad(Loader.java:561)

    at cpw.mods.fml.common.Loader.load(Loader.java:419)

    ... 5 more

Caused by: java.lang.NoClassDefFoundError: forge/IConnectionHandler

    at java.lang.ClassLoader.defineClass1(Native Method)

    at java.lang.ClassLoader.defineClass(Unknown Source)

    at java.security.SecureClassLoader.defineClass(Unknown Source)

    at java.net.URLClassLoader.defineClass(Unknown Source)

    at java.net.URLClassLoader.access$100(Unknown Source)

    at java.net.URLClassLoader$1.run(Unknown Source)

    at java.net.URLClassLoader$1.run(Unknown Source)

    at java.security.AccessController.doPrivileged(Native Method)

    at java.net.URLClassLoader.findClass(Unknown Source)

    at java.lang.ClassLoader.loadClass(Unknown Source)

    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

    at java.lang.ClassLoader.loadClass(Unknown Source)

    at java.lang.ClassLoader.loadClass(Unknown Source)

    at java.lang.Class.forName0(Native Method)

    at java.lang.Class.forName(Unknown Source)

    at cpw.mods.fml.common.Loader.loadModClass(Loader.java:494)

    ... 7 more

Caused by: java.lang.ClassNotFoundException: forge.IConnectionHandler

    at java.net.URLClassLoader$1.run(Unknown Source)

    at java.net.URLClassLoader$1.run(Unknown Source)

    at java.security.AccessController.doPrivileged(Native Method)

    at java.net.URLClassLoader.findClass(Unknown Source)

    at java.lang.ClassLoader.loadClass(Unknown Source)

    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

    at java.lang.ClassLoader.loadClass(Unknown Source)

    ... 23 more

--- END ERROR REPORT 4d854ee5 ----------

 

[gotyaoi]

I'm not sure why you did that with the jar. Looking at your code, you're using the api correctly, though don't forget the static methods in ElectricItem. Is there something that prompted you to throw the jar in there, cause it seems like a pretty odd course of action.

[jakj]

MCP and mods don't play well together. What you should be doing is compiling it with just the API source files, and then reobfuscating and running it in a vanilla Minecraft with just the mods you need to test with installed. You can easily create a shell script or batch file to do these steps for you, that will call MCP's "reobfuscate" script, then delete all files from your .minecraft/mods/foo directory, and then copy them in again. (If you are modifying base classes, this becomes more problematic, because you have to try to script something like 7zip to update the .jar.)

Mods in the mods folder load just fine from a directory instead of a .zip file.

[Gibbynator]

I followed what jakj said, and I got a new issue this time: the dreaded black screen. According to the FML log below, it loaded all the mod files just fine. I made sure to delete META-INF from the minecraft.jar, and add NEI 1.2.2.4 into the jar so I can test it.

Log as follows:

2012-07-04 00:10:22 [iNFO] Forge Mod Loader version 2.2.48.135 for Minecraft 1.2.5 loading

2012-07-04 00:10:22 [FINE] Attempting to load mods contained in the minecraft jar file and associated classes

2012-07-04 00:10:22 [FINE] Found a minecraft related file at C:\Users\Gibby\AppData\Roaming\.minecraft\bin\lwjgl.jar, loading

2012-07-04 00:10:22 [FINE] Found a minecraft related file at C:\Users\Gibby\AppData\Roaming\.minecraft\bin\jinput.jar, loading

2012-07-04 00:10:22 [FINE] Found a minecraft related file at C:\Users\Gibby\AppData\Roaming\.minecraft\bin\lwjgl_util.jar, loading

2012-07-04 00:10:22 [FINE] Found a minecraft related file at C:\Users\Gibby\AppData\Roaming\.minecraft\bin\minecraft.jar, loading

2012-07-04 00:10:22 [FINE] Found a mod class mod_MinecraftForge in file minecraft.jar, attempting to load it

2012-07-04 00:10:22 [FINE] ModLoader BaseMod class mod_MinecraftForge found, loading

2012-07-04 00:10:22 [FINE] ModLoader BaseMod class mod_MinecraftForge loaded

2012-07-04 00:10:22 [FINE] Mod class mod_MinecraftForge loaded successfully

2012-07-04 00:10:22 [FINE] Found a mod class mod_NotEnoughItems in file minecraft.jar, attempting to load it

2012-07-04 00:10:22 [FINE] ModLoader BaseMod class mod_NotEnoughItems found, loading

2012-07-04 00:10:22 [FINE] ModLoader BaseMod class mod_NotEnoughItems loaded

2012-07-04 00:10:22 [FINE] Mod class mod_NotEnoughItems loaded successfully

2012-07-04 00:10:22 [FINE] Minecraft jar mods loaded successfully

2012-07-04 00:10:22 [iNFO] Loading mods from C:\Users\Gibby\AppData\Roaming\.minecraft\mods

2012-07-04 00:10:22 [FINE] Found a directory Gibbycraft, attempting to load it

2012-07-04 00:10:22 [FINEST] Recursing into package gibbycraft

2012-07-04 00:10:22 [FINEST] Recursing into package gibbycraft.gui

2012-07-04 00:10:22 [FINEST] Recursing into package ic2

2012-07-04 00:10:22 [FINEST] Recursing into package ic2.api

2012-07-04 00:10:22 [FINE] Found a mod class mod_Aragami in directory Gibbycraft, attempting to load it

2012-07-04 00:10:22 [FINE] ModLoader BaseMod class mod_Aragami found, loading

2012-07-04 00:10:22 [FINE] ModLoader BaseMod class mod_Aragami loaded

2012-07-04 00:10:22 [FINE] Successfully loaded mod class mod_Aragami.class

2012-07-04 00:10:22 [FINE] Found a mod class mod_Gibbycraft in directory Gibbycraft, attempting to load it

2012-07-04 00:10:22 [FINE] ModLoader BaseMod class mod_Gibbycraft found, loading

2012-07-04 00:10:22 [FINE] ModLoader BaseMod class mod_Gibbycraft loaded

2012-07-04 00:10:22 [FINE] Successfully loaded mod class mod_Gibbycraft.class

2012-07-04 00:10:22 [FINE] Directory Gibbycraft loaded successfully

2012-07-04 00:10:22 [FINE] Found a zip or jar file industrialcraft-2-client_1.95b.jar, attempting to load it

2012-07-04 00:10:22 [FINE] Found a mod class mod_IC2 in file industrialcraft-2-client_1.95b.jar, attempting to load it

2012-07-04 00:10:22 [FINE] ModLoader BaseMod class mod_IC2 found, loading

2012-07-04 00:10:22 [FINE] ModLoader BaseMod class mod_IC2 loaded

2012-07-04 00:10:22 [FINE] Failed to find mcmod.info file in industrialcraft-2-client_1.95b.jar for mod_IC2

2012-07-04 00:10:22 [FINE] Mod class mod_IC2 loaded successfully

2012-07-04 00:10:22 [FINE] File industrialcraft-2-client_1.95b.jar loaded successfully

2012-07-04 00:10:22 [iNFO] Forge Mod Loader has loaded 5 mods

2012-07-04 00:10:22 [FINE] Beginning mod pre-initialization

2012-07-04 00:10:22 [FINER] Pre-initializing C:\Users\Gibby\AppData\Roaming\.minecraft\bin\minecraft.jar

2012-07-04 00:10:22 [FINE] Reading existing configuration file for mod_MinecraftForge : mod_MinecraftForge.cfg

2012-07-04 00:10:22 [FINEST] Configuration for mod_MinecraftForge.SPAWNER_ALLOW_ON_INVERTED found values default: true, configured: true, interpreted: true

2012-07-04 00:10:22 [FINE] Configuration for mod_MinecraftForge written to mod_MinecraftForge.cfg

2012-07-04 00:10:22 [FINER] Pre-initializing C:\Users\Gibby\AppData\Roaming\.minecraft\bin\minecraft.jar

2012-07-04 00:10:22 [FINE] Reading existing configuration file for mod_NotEnoughItems : mod_NotEnoughItems.cfg

2012-07-04 00:10:22 [FINE] Configuration for mod_NotEnoughItems written to mod_NotEnoughItems.cfg

So I get this idea that NEI is failing to boot, so I deleted it. I also changed around my packages a bit, and where the images were stored, and that seemed to fix it. Now I am enjoying toast and grilled cheese!

If a mod wants to trash this thread, go ahead. I got my issue fixed.

[jakj]

Something I found useful is to run Minecraft with java instead of javaw and pipe the output to a file, since base Minecraft doesn't log as well as Technic's launcher does.