# A23r771 Check failed - AI error on execution frame

**URL:** <https://discourse.stonehearth.net/t/a23r771-check-failed-ai-error-on-execution-frame/33213>\
**Category:** Bug Reports\
**Tags:** ai, a23r771\
**Created:** [December 31, 2017, 2:14am UTC](https://discourse.stonehearth.net/t/a23r771-check-failed-ai-error-on-execution-frame/33213 "2017-12-31T02:14:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Windy4sun](https://sea2.discourse-cdn.com/flex022/user_avatar/discourse.stonehearth.net/windy4sun/32/22938_2.png) [@Windy4sun](https://discourse.stonehearth.net/u/Windy4sun)\
**Post date:** [December 31, 2017, 2:14am UTC](https://discourse.stonehearth.net/t/a23r771-check-failed-ai-error-on-execution-frame/33213/1 "2017-12-31T02:14:01Z")

</div>

Another CHECK FAILED: release-771 (x64) The only mod I am using is debugtools

CHECK failed: C:\rb\ihome\root\SH-OB0-BUILD\stonehearth\source\lib\lua\ai\execution\_frame.cpp:982 invalid initial state “thinking” in run  
stack traceback:  
[C]: ?  
[C]: ?  
[C]: ?  
[C]: in function ‘run’  
stonehearth/components/ai/ai\_component.lua:515: in function \<stonehearth/components/ai/ai\_component.lua:499\>  
[C]: in function ‘xpcall’  
radiant/modules/commons.lua:66: in function ‘xpcall’  
stonehearth/components/ai/ai\_component.lua:499: in function ‘\_thread\_main’  
stonehearth/services/server/threads/thread.lua:273: in function \<stonehearth/services/server/threads/thread.lua:270\>  
[C]: in function ‘xpcall’  
radiant/modules/commons.lua:66: in function ‘xpcall’  
stonehearth/services/server/threads/thread.lua:270: in function ‘f’  
radiant/lib/env.lua:15: in function \<radiant/lib/env.lua:14\>  
**_Screenshot_**

 ![20171230193941_1](https://us1.discourse-cdn.com/flex022/uploads/stonehearth/original/3X/e/b/eb4303b0dc1ac1c4293a8dee4b39c241d3c8f438.jpg)

**_Log_**

[stonehearth.log](https://discourse.stonehearth.net/uploads/short-url/uusvnZBUqUSo1sdTASwPJHSP5VY.log) (132.2 KB)