When I try and launch my mod from a server, it just crashes and says that it can't find the keybindings class. My class is as follows:

 

public static final int TOGGLEBENDING = 0;
private static final String[] desc = {"Toggle Bending"};
private static final int[] keyValues = {Keyboard.KEY_X};
private final KeyBinding[] keys;
public static boolean BendingActive;
public ToggleBending() {

	keys = new KeyBinding[desc.length];
	for (int i = 0; i < desc.length; ++i) {
		keys[i] = new KeyBinding(desc[i], keyValues[i], "Elemental Imperium");
		ClientRegistry.registerKeyBinding(keys[i]);
	}
}

@SideOnly(Side.CLIENT)
@SubscribeEvent
public void onKeyInput(KeyInputEvent event) {
	if (keys[TOGGLEBENDING].isPressed()) {
		if (BendingActive) {
			BendingActive = false;
			System.out.println("Bending Activated");
			Minecraft.getMinecraft().thePlayer.sendChatMessage("Bending Activated");
		}else{
			BendingActive = true;
			System.out.println("Bending Dectivated");
			Minecraft.getMinecraft().thePlayer.sendChatMessage("Bending Deactivated");

		}	
	}
}

 

And my crash report from the server is:

 

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

Time: 26/10/14 12:12 PM
Description: Exception in server tick loop

cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: net/minecraft/client/settings/KeyBinding
at cpw.mods.fml.common.LoadController.transition(LoadController.java:162)
at cpw.mods.fml.common.Loader.preinitializeMods(Loader.java:515)
at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:88)
at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:314)
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:117)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)
Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/settings/KeyBinding
at com.elementalimperium.bending.ToggleBending.<init>(ToggleBending.java:27)
at com.elementalimperium.ElementalImperium.preInit(ElementalImperium.java:47)
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:513)
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.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:208)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:187)
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.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:118)
at cpw.mods.fml.common.Loader.preinitializeMods(Loader.java:513)
... 5 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.settings.KeyBinding
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 34 more
Caused by: java.lang.NullPointerException


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 7 (amd64) version 6.1
Java Version: 1.7.0_67, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 244839904 bytes (233 MB) / 376963072 bytes (359 MB) up to 1908932608 bytes (1820 MB)
JVM Flags: 2 total; -Xmx2G -XX:MaxPermSize=256M
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 v7.10.85.1232 Minecraft Forge 10.13.2.1232 4 mods loaded, 4 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized
FML{7.10.85.1232} [Forge Mod Loader] (forge-1.7.10-10.13.2.1232-universal.jar) Unloaded->Constructed->Pre-initialized
Forge{10.13.2.1232} [Minecraft Forge] (forge-1.7.10-10.13.2.1232-universal.jar) Unloaded->Constructed->Pre-initialized
elementalimperium{Dev Build 0.1.0.0} [Elemental Imperium] (Elemental_Imperium_DevBuild-0.1.0.7.jar) Unloaded->Constructed->Errored
Profiler Position: N/A (disabled)
Is Modded: Definitely; Server brand changed to 'fml,forge'
Type: Dedicated Server (map_server.txt)

 

Also, does anyone know how to send a chat message TO the player (Instead of from the player)?

 

Thanks in advance

-Whyneb360

Key bindings are only on the client, you have to register them through your client proxy, and send packets if you want to do anything on the server.

Thank you,

 

Could you please supply a link to where I can learn more about these packets?

Here you go.

You shouldn't need packets if what you are doing is on the client side only (i.e., if your 'BendingActive' is meant for rendering or some such). If you need that information on the server for whatever reason, then yes, you will need packets.

 

Your problem is more likely that you registered your KeyBinding class on both sides - register it in your ClientProxy to keep it isolated to the client side, and you should not crash with the exception given.

How would I register a keybinding in the ClientProxy?