ARK: SA Workshop Mod Broke After Update

ARK: SA workshop mod broke after auto-update — diagnosis and fix

Your ARK: Survival Ascended server was running fine yesterday. This morning it either won't start, or players are getting kicked on join, or a specific feature stopped working. Workshop mod auto-updates are the single biggest source of unannounced server breakage on ARK Survival Ascended. The mod author pushes a new version, Steam grabs it for your server, and the new version breaks something in your stack. This page is the triage flowchart.

Symptoms that point at a mod update

• Server worked yesterday, doesn't today, with no config changes from you.
• Server starts but crashes during world load with a "failed to load asset" error.
• Server starts, world loads, players join — and immediately get kicked with "mod version mismatch" or similar.
• A specific in-game item, structure, or creature is missing or broken.
• Players using older mod versions on their client cannot connect; players who just updated can.

If the symptom started right after a server restart that happened during overnight Steam updates, the cause is almost certainly a mod update, not the server itself.

Step 1: Identify which mod updated

Check the timestamp on each mod folder:

ls -lt /home/u<port>/arksa/data/ShooterGame/Mods/

The most-recently-modified folder is the most-recently-updated mod. If multiple mods updated in the same window, list all that updated in the last 24 hours:

find /home/u<port>/arksa/data/ShooterGame/Mods/ -maxdepth 1 -type d -mtime -1

Cross-reference the mod folder IDs against your ActiveMods setting in GameUserSettings.ini to identify which mod each ID corresponds to.

Step 2: Check the server log for the actual failure

The server log on world-load failure will name the asset that failed. Open:

/home/u<port>/arksa/data/ShooterGame/Saved/Logs/ShooterGame.log

Look for the lines just before the crash:

• LogLoad: Error: Failed to load asset /Game/Mods/MOD_ID/... — that mod has a corrupt or missing file.
• LogModule: ERROR: ModuleManager: Module 'MOD_NAME' failed to load — that specific module is broken.
• LogStreaming: Error: ... mismatched checksum — partial download; Steam delivered a bad file.

The error names the mod. The mod is the cause.

Step 3: Try a clean re-download first

Many mod-update failures are simply partial Steam downloads. Force a clean reinstall of the offending mod:

1. Stop the server.
2. Delete the mod's folder under ShooterGame/Mods/.
3. Also delete the mod's .mod file (same parent directory).
4. Start the server. SteamCMD will re-pull the mod from scratch.

About 30% of "mod broke" cases are actually "partial download" cases. Always try this before assuming the mod author broke something.

Step 4: If clean download did not help, the mod is genuinely broken

You have three options:

Option A — Disable the broken mod and restart

Edit GameUserSettings.ini, remove the broken mod's ID from ActiveMods, save, restart. The server should start cleanly without that mod. The trade: anything in your world that depends on that mod (creatures, items, structures) will be missing or non-functional until the mod is fixed.

For non-load-bearing mods (cosmetic, QoL, optional features), this is the fastest restore-service path. Most players will not notice immediately.

Option B — Roll back to the previous mod version

If you keep tier-2 backups of ShooterGame/Mods/ (see the backup strategy guide), restore the previous version of the mod:

1. Stop the server.
2. Restore the mod folder from yesterday's backup.
3. Restore the matching .mod file.
4. Prevent Steam from re-updating it temporarily — easiest way is to write-protect the directory or block the mod ID in SteamCMD config.
5. Start the server.

This restores service immediately and keeps the mod's functionality. You'll need to manually update again once the mod author ships a fix.

Option C — Wait for the mod author to fix it

If the mod is critical to your server's identity (Primal Fear on a Primal Fear server, an overhaul that defines the experience), waiting for the fix may be the only acceptable answer. Post on the mod's workshop page describing the issue. The author usually fixes within hours if it's a real bug.

Communicate to your players: "Server is down pending mod fix. Estimated 24-48 hours. Will post when back up." Set a Discord announcement; clarity is much better than a server that's just silently offline.

Step 5: When a kicked-on-join is the symptom

If the server starts but players get kicked with a mod-mismatch error, the cause is almost always: the server has the new mod version, the player's local client has the old version (or vice versa).

Make sure both sides update. The player should:

1. Open Steam Workshop.
2. Right-click each mod the server uses, select Properties.
3. Verify the mod shows "Subscribed."
4. Manually trigger "Update" if Steam hasn't auto-updated.
5. Verify ARK launches and the mod loads in the client.

If the player cannot get to the new version (mod was deprecated, mod was renamed, or Steam is having distribution issues), they will need to wait.

Preventing this from happening again

1. Tier-2 backups of the Mods folder, not just the save

Most backup strategies snapshot ShooterGame/Saved/ and skip ShooterGame/Mods/. The Mods folder is several GB and feels redundant ("Steam will redownload"). When a workshop author breaks a mod, Steam has only the broken version — your backup is the only way back to the working one.

Add the Mods folder to your daily archive. Storage cost is moderate, recovery value is high.

2. Stage mod updates before applying to production

If your community is large enough, run a small staging server with the same mod set. Steam auto-updates the staging server first (or on a faster cadence). Test for an hour. If the staging server is fine, the production server can take the same update with confidence.

Most rented hosts let you spin up a second server cheaply for exactly this purpose.

3. Pin critical mod versions when possible

Some hosts let you disable auto-updates for specific mods. If a mod is critical and stable, pinning it to the current known-good version protects you from authoring mistakes. The trade: you have to manually re-test and re-pin every time you do want to update.

4. Restart-window timing

Steam auto-updates mods when the server restarts. If you schedule server restarts at low-traffic hours (typically 4-6am local time), you'll catch broken updates during hours when few players are online. The recovery is less visible to your community.

5. Have a "minimum viable mod set" ready

Document the mod IDs that are essential vs nice-to-have. When a mod breaks, you can quickly disable the nice-to-haves and keep service running on the essential set. Worst-case fallback is a documented "vanilla mode" configuration — no mods, server still works.

Mod compatibility audit after every major ARK patch

Wildcard's major patches (V2.x release tier, not minor hotfixes) often touch the modding API. Even if no individual mod has updated, the game patch can break mods that don't follow API changes. After any major ARK update:

1. Wait 2-3 days before applying the patch to your server. Mod authors fix in that window.
2. Cross-reference your mod list against community compatibility threads.
3. If your stack is heavy (5+ mods), expect at least one to need an update.
4. Schedule the patch + mod-validation cycle for a known-low-traffic maintenance window.

On Supercraft-hosted ARK: Survival Ascended servers, mod auto-update timing is configurable and tier-2 backups include the Mods folder by default. See ARK: Survival Ascended plans.

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