package com.example.examplemod;

import cpw.mods.fml.common.FMLCommonHandler;
import cpw.mods.fml.common.event.FMLPreInitializationEvent;
import cpw.mods.fml.common.Mod;
import cpw.mods.fml.common.Mod.EventHandler;
import cpw.mods.fml.common.event.FMLInitializationEvent;
import net.minecraftforge.common.MinecraftForge;

@Mod(modid = ExampleMod.MODID, version = ExampleMod.VERSION)

public class ExampleMod {
    static final String MODID = "examplemod";
    static final String VERSION = "1.0";

    @EventHandler
    public void load(FMLInitializationEvent event) {
        System.out.println("load()");
        MinecraftForge.EVENT_BUS.register(new EventHandlerCommon());
        FMLCommonHandler.instance().bus().register(new EventHandlerCommon());
        FMLCommonHandler.instance().fireKeyInput();
    }

    @EventHandler
    public void init(FMLInitializationEvent event) {
        RenderGuiHandler a = new RenderGuiHandler();
        MinecraftForge.EVENT_BUS.register(a);
    }
}

package com.example.examplemod;

import cpw.mods.fml.common.eventhandler.EventPriority;
import cpw.mods.fml.common.eventhandler.SubscribeEvent;
import cpw.mods.fml.common.gameevent.InputEvent;
import net.minecraft.client.settings.KeyBinding;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.entity.player.PlayerPickupXpEvent;
import org.lwjgl.input.Keyboard;

class EventHandlerCommon {
    @SubscribeEvent(priority = EventPriority.NORMAL)
    public void onPlayerPickupXP(PlayerPickupXpEvent e) {
        e.orb.xpValue *= 50;
    }


    @SubscribeEvent(priority= EventPriority.NORMAL)
    public void onEvent(InputEvent.KeyInputEvent event) {

        KeyBinding k = new KeyBinding("key.hud.desc", Keyboard.KEY_H, "key.magicbeans.category");
        if (k.isPressed()) {
           // RenderGuiHandler a = new RenderGuiHandler();
            //MinecraftForge.EVENT_BUS.register(a);
        }
    }
}

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

Time: 4/28/17 3:05 PM
Description: There was a severe problem during mod loading that has caused the game to fail

cpw.mods.fml.common.LoaderException: java.lang.IllegalAccessError: tried to access class com.example.examplemod.EventHandlerCommon from class cpw.mods.fml.common.eventhandler.ASMEventHandler_7_EventHandlerCommon_onEvent_KeyInputEvent
	at cpw.mods.fml.common.LoadController.transition(LoadController.java:163)
	at cpw.mods.fml.common.Loader.initializeMods(Loader.java:739)
	at cpw.mods.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:311)
	at net.minecraft.client.Minecraft.startGame(Minecraft.java:597)
	at net.minecraft.client.Minecraft.run(Minecraft.java:942)
	at net.minecraft.client.main.Main.main(Main.java:164)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
	at net.minecraftforge.gradle.GradleStartCommon.launch(Unknown Source)
	at GradleStart.main(Unknown Source)
Caused by: java.lang.IllegalAccessError: tried to access class com.example.examplemod.EventHandlerCommon from class cpw.mods.fml.common.eventhandler.ASMEventHandler_7_EventHandlerCommon_onEvent_KeyInputEvent
	at cpw.mods.fml.common.eventhandler.ASMEventHandler_7_EventHandlerCommon_onEvent_KeyInputEvent.invoke(.dynamic)
	at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)
	at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:140)
	at cpw.mods.fml.common.FMLCommonHandler.fireKeyInput(FMLCommonHandler.java:540)
	at com.example.examplemod.ExampleMod.load(ExampleMod.java:21)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:532)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	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 cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:212)
	at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	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 cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:119)
	at cpw.mods.fml.common.Loader.initializeMods(Loader.java:737)
	... 12 more


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

-- System Details --
Details:
	Minecraft Version: 1.7.10
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_131, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 671793000 bytes (640 MB) / 1037959168 bytes (989 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1614 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
	UCHI	mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) 
	UCHI	FML{7.10.99.99} [Forge Mod Loader] (forgeSrc-1.7.10-10.13.4.1614-1.7.10.jar) 
	UCHI	Forge{10.13.4.1614} [Minecraft Forge] (forgeSrc-1.7.10-10.13.4.1614-1.7.10.jar) 
	UCHE	examplemod{1.0} [Example Mod] (MCMods3_main) 
	GL info: ' Vendor: 'Intel' Version: '4.3.0 - Build 10.18.15.4279' Renderer: 'Intel(R) HD Graphics 4600'

This happens with any event I try to add.  Not sure what the issue is

1.7.10 is no longer supported on this forum, your thread will get closed by a mod. That said, your event class is not public - I assume that's what's causing the IllegalAccessError.

1 minute ago, Jay Avery said:

1.7.10 is no longer supported on this forum, your thread will get closed by a mod. That said, your event class is not public - I assume that's what's causing the IllegalAccessError.

Thanks!  Is there any good place to go for 1.7.10 support?