# Crash - Serialization Error: Action Needed

**URL:** <https://forums.funcom.com/t/crash-serialization-error-action-needed/137243>\
**Category:** General Discussion\
**Tags:** bug\
**Created:** [September 16, 2020, 1:38pm UTC](https://forums.funcom.com/t/crash-serialization-error-action-needed/137243 "2020-09-16T13:38:16Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Narelle](https://sea1.discourse-cdn.com/funcom/user_avatar/forums.funcom.com/narelle/32/45919_2.png) [@Narelle](https://forums.funcom.com/u/Narelle)\
**Post date:** [September 16, 2020, 1:46pm UTC](https://forums.funcom.com/t/crash-serialization-error-action-needed/137243/2 "2020-09-16T13:46:25Z")

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> [@RanDumGai](#):
>
> Serialization Error: Action Needed

This error means that you are running a mod which is not compatible with the latest DevKit. Check your modlist and remove any mod that hasn’t been updated on/after 15.09.2020. If the issue is resolved, you can start adding 1 by 1 the old mods to see what works and what doesn’t.

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_[View the full topic](https://forums.funcom.com/t/crash-serialization-error-action-needed/137243)._