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NoClassDefFoundError accessing Forge classes


Redempt

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I started writing mods recently, and I can't figure out why I'm getting a NoClassDefFoundError when attempting to access ClientChatEvent.

Here's my mcmod.info:

{
  "modListVersion": 1,
  "modList": [{
    "modid": "clientalias",
    "name": "ClientAlias",
    "description": "Allows you to create aliases for commands and chat",
    "version": "1.0",
    "mcversion": "1.11.2",
    "updateUrl": "",
    "authorList": ["Redempt"],
    "credits": "Created by Redempt",
    "requiredMods": ["forge", "cmdmgr"],
    "dependencies": ["cmdmgr", "forge"],
    "useDependencyInformation": true
  }]
}

And for CmdMgr, my other mod which it depends on:

{
  "modListVersion": 1,
  "modList": [{
    "modid": "cmdmgr",
    "name": "CmdMgr",
    "description": "A library which makes commands easier to use",
    "version": "1.0",
    "mcversion": "1.11.2",
    "updateUrl": "",
    "authorList": ["Redempt"],
    "credits": "Created by Redempt",
    "requiredMods": ["forge"],
    "dependencies": ["forge"],
    "useDependencyInformation": true
  }]
}

Here's the error:

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from ClientAlias (clientalias)
Caused by: java.lang.NoClassDefFoundError: net/minecraftforge/client/event/ClientChatEvent
	at java.lang.Class.getDeclaredMethods0(Native Method)
	at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
	at java.lang.Class.privateGetPublicMethods(Class.java:2902)
	at java.lang.Class.getMethods(Class.java:1615)
	at net.minecraftforge.fml.common.eventhandler.EventBus.register(EventBus.java:83)
	at redempt.cmdmgr.Command.register(Command.java:63)
	at redempt.cmdmgr.Command.register(Command.java:49)
	at redempt.clientalias.Main.postInit(Main.java:37)

 

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"Client" suggests that this class does not exist on the server. Since you pulled the error out of its context, I'll assume your error was generated on the server until you show otherwise.

The debugger is a powerful and necessary tool in any IDE, so learn how to use it. You'll be able to tell us more and get better help here if you investigate your runtime problems in the debugger before posting.

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Show your code.

mcmod.info files are useless, they are barely even used by Forge.

Apparently I'm a complete and utter jerk and come to this forum just like to make fun of people, be confrontational, and make your personal life miserable.  If you think this is the case, JUST REPORT ME.  Otherwise you're just going to get reported when you reply to my posts and point it out, because odds are, I was trying to be nice.

 

Exception: If you do not understand Java, I WILL NOT HELP YOU and your thread will get locked.

 

DO NOT PM ME WITH PROBLEMS. No help will be given.

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