How to Properly Install and Reload the Zombies Update Model
Installation Steps
After extracting the mod archive, you'll find three main folders: ModelEngine, MythicMobs, and a resource pack. Place the ModelEngine folder contents into plugins/ModelEngine on your server. Transfer MythicMobs folder contents into plugins/MythicMobs. Install the resource pack either directly on your server or merge its assets with your existing server resource pack.
Activating the Mod
Once files are in place, restart your server completely. Alternatively, if you want to avoid a full restart, execute /meg reload to refresh ModelEngine and /mm reload to refresh MythicMobs. Both commands must run successfully for the new zombie models and behaviors to take effect.
Troubleshooting
If zombies don't appear with updated models or behaviors, verify all files are in the correct directories. Check that both reload commands executed without errors in the console. Ensure your resource pack is enabled on the client side if using a client-side component. If issues persist, a full server restart is the most reliable solution.