Minecraft isn't working, tried installing mod?

We got Forge today. It's installed and everything. We downloaded the Mutant Creatures Mod and put the.zip in the.minecraft/mods file. Following the intructions on the forums, we started the game with the 1.6.4_Forge version. The game shows the Mojang logo, but then immediately shuts down afterwards. We tried restarting.

Is there a mod installer that is supposed to come with this? This is the first mod we've tried installing since my brother is the one that plays the game.

Added (1). We got rid of the old OptiFine file.

Added (2). And it still does the same thing.

Vanesa

You need CustomSpawner and GUIAPI for Mutant Creatures Mod.
How to install for Minecraft 1.6.x+ :
1. Install Forge using the installer.
2. Launch the game using the Forge profile. Exit the game.
3. Copy the MoCreatures.zip, CustomSpawner.zip and GUI Api into the.minecraft/mods folder.
4. Play! (Make sure your profile is set to Forge)
You can download MoCreatures.zip, CustomSpawner.zip and GUI Api here: http://3minecraft.com/mocreatures-mod/

Guest

Did you forget to delete the MetaINF folder? That could be your problem. Most mods don't work unless you delete the folder.

Guest

Install a different forge, the recommended one for 1.6.4. Check if you have downloaded the 1.6.4 mod or a different version.

Guest

1. Install Forge using the installer.
2. Launch the game using the Forge profile. Exit the game.
3. Copy the MoCreatures.zip, CustomSpawner.zip and GUI Api into the.minecraft/mods folder.
4. Play! (Make sure your profile is set to Forge)
You can download MoCreatures.zip, CustomSpawner.zip and GUI Api here: http://3minecraft.com/mocreatures-mod/

Guest