[1.7.10]Client crashes when opened GUI on a server[SOLVED!]

[TominoCZ]

My Block class:

 

public class LobbyBlock extends Block{

public LobbyBlock(Material rock) {
	super(rock);
	this.setBlockName("LobbyBlock");
	this.setBlockTextureName(Main.MODID + ":" + "0");
	this.setCreativeTab(Tabs.CreativeTab);
	this.setLightLevel(1F);
	this.setLightOpacity(2555);
}

@Override
public boolean onBlockActivated(World world, int x, int y, int z, EntityPlayer player, int par6, float par7, float par8, float par9)
    {
	//player.openGui(Main.instance, 0, world, x, y, z);

	FMLNetworkHandler.openGui(player, Main.instance, 0, world, x, y, z);
	return true;
    }
}

 

My GuiHandler class:

 

public class GuiHandler implements IGuiHandler {

public GuiHandler (){
}

@Override
public Object getClientGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
	if(ID == 0){
		return new GuiLobby();
	}
	return null;
}

@Override
public Object getServerGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) {
	// TODO Auto-generated method stub
	return null;
}
}

 

My Main class:

 

@Mod(modid = Main.MODID, name = Main.NAME, version = "PreAlpha 0.0.3")
public class Main {
@Instance(Main.MODID)
public static Main instance;

public static final String MODID = "PAYDAY2";
public static final String NAME = "PAYDAY 2";
public static final String VERSION = "PreAlpha 0.0.3";

public Main() {

}

@EventHandler
@SideOnly(Side.CLIENT)
public void preInit(FMLPreInitializationEvent event) {
	Blocks.registerBlocks();
	Items.registerItems();
	Recipes.initShapedRecipes();
	Recipes.initShalessRecipes();
}

@EventHandler
@SideOnly(Side.SERVER)
public void Init(FMLInitializationEvent event) {
	NetworkRegistry.INSTANCE.registerGuiHandler(Main.instance, new GuiHandler());

	Blocks.registerBlocks();
	Items.registerItems();
	Recipes.initShapedRecipes();
	Recipes.initShalessRecipes();
}

@EventHandler
public void postInit(FMLPostInitializationEvent event) {

}
}

 

Now if I start the Server and the Client, join the server and click the block, the Client crashes. No exact information in the log.

Maybe its the GuiHandler.. Maybe the "new GuiLobby();" crashes it... I really don't know.

 

Any ideas why it crashes everytime?

[Failender]

show log.

 

[TominoCZ]

Download the log files here: http://www65.zippyshare.com/v/E1qgvxY1/file.html

[TominoCZ]

GUYS NVM cuz:

I removed both @SideOnly in the Main class and tossed everything in the Init method except the registering of the GuiHandler.

Then it works even on the server.

It was crashing, because the GuiHandler registered only on the server, not the client(that's why I removed the @SideOnly()).

[Failender]

dont use SideOnly if u dont know what its doing.