# 31.20 \[Solved\] UEFN Fix Validation Error pop up wont "Run"

**URL:** <https://forums.unrealengine.com/t/31-20-solved-uefn-fix-validation-error-pop-up-wont-run/2024338>\
**Category:** Issues and Bug Reporting\
**Tags:** fortnite-creative, unreal-editor-for-fortnite, fortnite\
**Created:** [September 17, 2024, 11:48am UTC](https://forums.unrealengine.com/t/31-20-solved-uefn-fix-validation-error-pop-up-wont-run/2024338 "2024-09-17T11:48:36Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Jimbohalo10](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/jimbohalo10/32/961440_2.png) [@Jimbohalo10](https://forums.unrealengine.com/u/Jimbohalo10)\
**Post date:** [September 17, 2024, 11:51am UTC](https://forums.unrealengine.com/t/31-20-solved-uefn-fix-validation-error-pop-up-wont-run/2024338/2 "2024-09-17T11:51:58Z")

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31.20 [Solved] UEFN Fix Validation Error pop up wont “Run”

**Dont use this unless the output log has been checked for “Conform Texture” errors in the Output log first**

see [fix conforming](https://forums.unrealengine.com/t/power-of-2-does-not-work/2024339/4)

Legal obligation  
Neither EPic or its agents are responsible for this procedure  
**This is NOT endorsed by Epic and there is NO WARRANTY.**  
**This problem lies in YOUR PC in YOUR files and you are responsible for using this procedure.**

The problem reported above can be fixed by clearing YOUR local temp file  
which contains files going back to 29.60  
Make sure you have restarted your PC

Update REMOVED DUE TO PEOPLE SAYING THIS IS CAUSING THEM PROBLEMS  
[fix conforming](https://forums.unrealengine.com/t/power-of-2-does-not-work/2024339/4)

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