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Stage Hytale mod updates and diagnose build compatibility failures

A Hytale update can change both player compatibility and extension behaviour. Investigate those separately: a client rejected before joining is a different problem from a plugin failing during startup. Keep the original universe and package collection intact while testing a candidate release.

Capture a reproducible baseline

Record the server build, client build, launcher arrangement, installed extension filenames and the last successful startup. Note which game or mod updates occurred immediately before the failure. Capture the first relevant error and its timestamp rather than only the final shutdown message.

Save and stop normally. Back up the complete service, including universe data, mod packages, generated configuration and extension-owned data. Keep credentials private. An update that preserves a directory does not prove every plugin inside it remains compatible.

Separate the failing layer

  1. Client rejected for protocol compatibility: compare the game builds before changing mods. The current official manual documents exact client-server protocol matching. Do not rely on a promised future tolerance or assume that two builds labelled release are interchangeable.
  2. Server fails while loading an extension: record the named package and check the author's supported build and dependency releases. A plugin compiled against another API may need its own update even when the game payload is complete.
  3. Server starts but content is absent: verify the package reached the active runtime's mod directory and read the extension's configuration instructions. Do not copy an invented enable flag into world configuration.
  4. Only one feature fails: preserve its configuration and data. Test its documented action independently before changing authentication, allocation settings or unrelated extensions.

Construct a candidate on a copy

Use an isolated test service with copied data. Update the game payload and intended extension releases as a recorded compatible group, following the current template and author instructions. Keep the original launcher in the recovery copy; mixing launch scripts and game assets from different releases makes later diagnosis harder.

The official update workflow preserves saves and mods, but that is not an extension migration guarantee. Check each project's instructions before converting its configuration or database. If an early-plugin warning appears, do not add an acceptance flag as routine troubleshooting; ask the author whether a supported ordinary package exists.

Where you need to isolate a suspected conflict, use a fresh disposable test world with the minimum dependencies first. Then test the complete intended collection against another copy of the existing universe. Do not remove content packages from the live universe and save over it just to see whether startup succeeds.

Verify or restore the full recovery point

Join with the compatible client, exercise the affected feature and inspect existing player data. Save and restart the candidate, then repeat the check. Retain the successful package list with the backup so support can reproduce the result.

If recovery is necessary, preserve the failed candidate and restore the matching pre-change server files, configuration, packages and untouched universe with support assistance. Restoring only an old plugin over newly migrated data is not a complete rollback. Ask the extension author about safe migration boundaries before reopening production to players.

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