# \[Solved\] How to fix Fatal Errors in UEFN related to Graphic Cards and Shaders and Derived Data problems

**URL:** <https://forums.unrealengine.com/t/solved-how-to-fix-fatal-errors-in-uefn-related-to-graphic-cards-and-shaders-and-derived-data-problems/2080832>\
**Category:** Issues and Bug Reporting\
**Tags:** unreal-engine, unreal-editor-for-fortnite\
**Created:** [October 22, 2024, 7:02pm UTC](https://forums.unrealengine.com/t/solved-how-to-fix-fatal-errors-in-uefn-related-to-graphic-cards-and-shaders-and-derived-data-problems/2080832 "2024-10-22T19:02:37Z")\
**Posts on this page:** 1\
**Showing post:** 9

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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:** [October 28, 2024, 10:42pm UTC](https://forums.unrealengine.com/t/solved-how-to-fix-fatal-errors-in-uefn-related-to-graphic-cards-and-shaders-and-derived-data-problems/2080832/9 "2024-10-28T22:42:13Z")

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hi @Fallen-Champ  
The UEFN crashes are due to the wrong path on F:

Therefore your PC needs the new path added in Windows Explorer

on F:  
create directory , not quotes,“Program Files”  
Then go into “F:\Program Files”

on F:  
create directory , not quotes,“Epic Games”

Now go in Windows File Explorer  
copy **F:\Fortnite** to **F:\Program Files\Epic Games\Fortnite**

now update the short cut to Target to

```auto
F:\Program Files\Epic Games\Fortnite\FortniteGame\Binaries\Win64\UnrealEditorFortnite-Win64-Shipping.exe" -d3d11 -sm5 -DDC=None

```

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