# Mutating NPCs cause crashes

**URL:** <https://discourse.cataclysmdda.org/t/mutating-npcs-cause-crashes/24027>\
**Category:** The Garage\
**Created:** [June 25, 2020, 11:29pm UTC](https://discourse.cataclysmdda.org/t/mutating-npcs-cause-crashes/24027 "2020-06-25T23:29:46Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Avalon](https://avatars.discourse-cdn.com/v4/letter/a/ec9cab/32.png) [@Avalon](https://discourse.cataclysmdda.org/u/Avalon)\
**Post date:** [June 25, 2020, 11:29pm UTC](https://discourse.cataclysmdda.org/t/mutating-npcs-cause-crashes/24027/1 "2020-06-25T23:29:46Z")

</div>

So i’ve been trying an Elf biuld and gaining a small army of NPCs, but i’ve been cut short by a hard crash that happens anytime i try to give my NPC a serum.

[crash log](https://docs.google.com/document/d/1mOLPsRPHgrH8Uu-VEqyIGILbSCiwow_wU5PlRLbG8aU/edit?usp=sharing)