Troubleshooting "Serialization Error Action Needed" in Ready or Not

The "Serialization Error Action Needed" error in Ready or Not, often accompanied by "Corrupt data found, please verify your installation," is a common Unreal Engine issue. Here's how to resolve it:

1. Verify Game Files:

This is the first troubleshooting step. Ensure Steam isn't in offline mode.

• Locate Ready or Not in your Steam Library.
• Right-click, select "Properties," then "Local Files," and finally "Verify Integrity of Game Files."
• Steam will scan and replace any corrupted or missing files. Retry launching the game. If successful, the issue is resolved.

2. Disable Mods:

Outdated or incompatible mods, especially those not updated for Unreal Engine 5 (post-July 2024), frequently cause this error.

• Open your Steam Library, right-click Ready or Not, select "Manage," then "Browse Local Files."
• Navigate to ReadyorNot\Content\Paks.
• Delete the mod.io folder.
• Launch the game. This will disable all mods.

3. Reinstall Mods (One by One):

Reinstall your mods individually to identify the culprit.

• Visit the mod's source (Nexus Mods, Mod.io, etc.).
• Check the last update date. Only reinstall mods updated after July 2024 (the UE5 update).
• Install one mod, test the game. Repeat for each mod. If the error returns, the last installed mod is the problem; it's likely incompatible with the UE5 version.

4. Last Resort: Reinstall Ready or Not:

If all else fails, a clean reinstall of Ready or Not might be necessary. While less likely, hard drive corruption could also be a factor. Most reported instances, however, are due to outdated mods.

Ready or Not is available on PC.