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)

 

"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 error happens on startup. It's intended to be a client mod, so it doesn't even load on servers.

Show your code.

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

Main class: https://hastebin.com/ayuhojaqiy.java

Main class for CmdMgr: https://hastebin.com/jirakuxube.css

CommandHook: https://hastebin.com/neloyiroki.css

Command: https://hastebin.com/xanefexoxe.java

Strangely enough, it seems to only be ClientChatEvent that doesn't exist

Edited November 19, 20177 yr by Redempt

I did switch to the ClientCommandManager. I only recently started using Forge.

 

Here's the full crash report:

https://hastebin.com/todosozahi.pas

Does Optifine change the way ClientChatEvent works?

Edited November 20, 20177 yr by Redempt

Yeah, it was Optifine messing with ClientChatEvent...