magmacs

I solved this problem. I replaced "public class MainMenu extends GuiMainMenu {" to "public class MainMenu extends GuiScreen {"

Version of minecraft 1.9

Here is the code I've currently been working with: package com.limforg.gui; import java.io.IOException; import net.minecraft.client.gui.GuiButton; import net.minecraft.client.gui.GuiMainMenu; import net.minecraft.client.gui.GuiScreen; import net.minecraft.client.resources.I18n; import net.minecraftforge.fml.client.config.GuiButtonExt; public class MainMenu extends GuiMainMenu { public GuiButtonExt play; @Override public void initGui() { play = new GuiButtonExt(0, width / 2 - 75, height / 2 - 70, "play"); buttonList.add(play); } @Override protected void mouseClicked(int mouseX, int mouseY, int mouseButton) throws IOException { super.mouseClicked(mouseX, mouseY, mouseButton); } @Override public void drawScreen(int mouseX, int mouseY, float partialTicks) { drawDefaultBackground(); super.drawScreen(mouseX, mouseY, partialTicks); } @Override protected void actionPerformed(GuiButton button) throws IOException { if (button == play) { mc.displayGuiScreen(new GuiMainMenu()); } } } But after launch, minecraft crashes with a stacktrace: com.limforg.gui.MainMenu.drawScreen(MainMenu.java:31) Someone help me pls!