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Add mcMMO skills and preserve existing player levels

CloudExamcMMO adds skills, progression and abilities to supported Minecraft servers. Plan its effects on survival gameplay before increasing experience rates or rewards. It stores progression separately from the ordinary world, so restoring a world alone does not guarantee that player skills return to the matching point in time.

Choose the correct project and build

Use the official mcMMO website and its linked distribution channels. Several unrelated projects use similar names; a client-side mod or an unofficial repack is not a substitute for the server plugin. Obtain any required licence legitimately and check support for your Minecraft, Java and server build.

Stop normally and keep a completed backup of worlds, the mcMMO data directory and its configured player storage. Export an external database consistently while writes are stopped. If this is an upgrade, retain the old JAR and configuration. Read the changelog before assuming that every configuration option or stored value remains compatible with an older release.

Establish a clean baseline

  1. Follow plugin installation and keep one mcMMO JAR in the loaded plugins directory.
  2. Start once and inspect Console for mcMMO and storage errors. Let the compatible release generate its own defaults rather than uploading another server's whole directory.
  3. Join with a disposable, non-operator test account and use the plugin's installed help guide.to inspect an available skill.
  4. Perform a small number of ordinary actions for that skill, such as mining naturally generated blocks where the configured skill permits it.
  5. Record progress, stop and restart normally, then confirm the same account retains its progress.

Keep the test player separate from an established player's account. Do not use a reset or database conversion command to diagnose a display problem. If progress is not retained, preserve the log and investigate storage before opening skills to everyone.

Change progression settings carefully

mcMMO splits configuration across several YAML files. Find the setting in the documentation for the installed release instead of adding an old internet example to whichever file looks similar. Back up that file, change one behaviour and test the same action again under the same conditions.

Consider experience rates, ability effects and interactions with protection or economy plugins together. A skill bonus can change how quickly items enter the economy. Avoid enabling several overlapping reward systems at once unless you have tested the combined outcome. Permission-based bonuses also need a normal-player test; an operator's result can hide the real access rules.

Diagnose an unexpected result

Check the skill and action, relevant world restrictions, player permission context and any plugin cancelling the action. Distinguish missing progression from a missing action-bar message; other plugins can compete for the same display area. Test a simple action without integrations on an isolated copy if the live setup is complex.

For an update, compare the release notes and generated defaults before replacing customised configuration wholesale. A rollback should restore matching plugin files and player data if a migration changed storage. Send support the precise build, skill, action, test result and redacted log. See permission groups. Further reading: installation and updates, configuration overview and main configuration reference.

Looking for another plugin? Browse the Minecraft plugin guide directory.