# Error for mutation category "threshold\_mut"

**URL:** <https://discourse.cataclysmdda.org/t/error-for-mutation-category-threshold-mut/16057>\
**Category:** The Garage\
**Created:** [August 1, 2018, 1:56pm UTC](https://discourse.cataclysmdda.org/t/error-for-mutation-category-threshold-mut/16057 "2018-08-01T13:56:32Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![DaWhatTheFox](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.cataclysmdda.org/dawhatthefox/32/1307_2.png) [@DaWhatTheFox](https://discourse.cataclysmdda.org/u/DaWhatTheFox)\
**Post date:** [August 1, 2018, 1:56pm UTC](https://discourse.cataclysmdda.org/t/error-for-mutation-category-threshold-mut/16057/1 "2018-08-01T13:56:32Z")

</div>

I just got back to Cataclysm DDA after having it on hold for like 2-3 months, and whenever I try to create a character in a new world I am greeted with this:

 ![](https://us1.discourse-cdn.com/flex016/uploads/cataclysmdda/original/2X/e/ed40dcddc08175ac1ea3be30bb0902decdf11326.png)

I get this error on multiple mods, as I was able to see on a quick check, including this mod, Cataclysm++, and Arcana, among possibly others.

---

<div class="post-metadata">

**Author:** ![Zhilkin](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.cataclysmdda.org/zhilkin/32/3749_2.png) [@Zhilkin](https://discourse.cataclysmdda.org/u/Zhilkin)\
**Post date:** [August 1, 2018, 2:12pm UTC](https://discourse.cataclysmdda.org/t/error-for-mutation-category-threshold-mut/16057/2 "2018-08-01T14:12:58Z")

</div>

Default values were removed from `threshold_mut`, `mutagen_message` and `iv_message` nodes, so mutation categories MUST set them explicitily.

Catcalysm++ (or any other mod changing mutation categories) should be updated in respect to recent changes in

> <https://github.com/CleverRaven/Cataclysm-DDA/pull/24183>