# Assertion Failed: rotate.is\_unit

**URL:** <https://discourse.stonehearth.net/t/assertion-failed-rotate-is-unit/20048>\
**Category:** Other Reports\
**Tags:** no\_longer\_applicable\
**Created:** [February 13, 2016, 8:49am UTC](https://discourse.stonehearth.net/t/assertion-failed-rotate-is-unit/20048 "2016-02-13T08:49:23Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![twonky](https://avatars.discourse-cdn.com/v4/letter/t/e68b1a/32.png) [@twonky](https://discourse.stonehearth.net/u/twonky)\
**Post date:** [February 13, 2016, 8:49am UTC](https://discourse.stonehearth.net/t/assertion-failed-rotate-is-unit/20048/1 "2016-02-13T08:49:24Z")

</div>

**Summary:**

I have this error multiple times. It occurs sometimes, if 2 soldiers attacks the same enemy and it is dying or if 3 enemies attacks one soldier. Then Windows error dialog popup with text: Asseration Failed: rotate.is\_unit()(C:\rb\ihome\root\SH-OB0-BUILD\stonehearth\source\csg\matrix4.cpp:499)

**Stonehearth.log:**

The log files was a little bit large, so i post it on [Stoneheart Log - Pastebin.com](http://pastebin.com/C2X42gt7)

**Attachments:**

crash.dmp -\> [crash\_2016\_02\_13.dmp - Google Drive](https://goo.gl/RukOKW)

**Versions and Mods:**

Stonehearth version 0.14.0 release 523 (x64) without any mods.

**System Information:**

Windows version 10  
video cards:

- Geforce 210
- Geforce 9800 GTX (not GTX 980) running on it  
monitor type: 3 external monitors

**Notes:**

Running in window mode.