# Does anyone know how to fix this?

**URL:** <https://forums.unrealengine.com/t/does-anyone-know-how-to-fix-this/2272723>\
**Category:** UEFN Validation\
**Tags:** unreal-engine, unreal-editor-for-fortnite, crash, bug-report, question\
**Created:** [January 12, 2025, 9:59am UTC](https://forums.unrealengine.com/t/does-anyone-know-how-to-fix-this/2272723 "2025-01-12T09:59:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![connerkingtorres](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@connerkingtorres](https://forums.unrealengine.com/u/connerkingtorres)\
**Post date:** [January 12, 2025, 9:59am UTC](https://forums.unrealengine.com/t/does-anyone-know-how-to-fix-this/2272723/1 "2025-01-12T09:59:59Z")

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I was pushing a new update for my map and attempted to rebuild HLODs. During the process, I received a build failed message, and the memory usage spiked to 128k. The project size also increased from 17% to 29%.

I have streaming enabled with a loading range of 16,200 and a cell size of 8,200. I tried deleting the new HLODs, but that failed. I then experimented with different cell/loading range settings to remove the HLODs, but nothing worked. The output log didn’t show anything after the failure.

After resetting the engine, I now can’t interact with the HLODs at all. When I try, it loads for 2–3 minutes and then stops without any error message. I followed several tips from forums, including:

- Saving all assets
- Validating HLODs
- Validating files
- Uninstalling and reinstalling UEFN and Fortnite on a new drive

I used revision control to make a backup of the map, then deleted the HLOD file in the content drawer and attempted to rebuild it again. This time, it failed, but I got a popup and an output log filled with errors.

Some multiple errors include:

- MoleTasks: (Possibly related to Fortnite’s Impostor mode)
- Black Panther Gameplay
- Chapter 6, Season 1 Bosses
- Fortnite POIs
- Errors about failing to load material functions into the C drive (even though Fortnite was never installed on my C drive).

I have no idea what caused this issue. All I did was revert the Christmas update on my map, and nothing new was imported. If anyone has a solution let me know.

 ![error1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/5/a/3/5a3b139b4225d4bc34f27d428dd5fb1049293ac8.png)  
 ![error2](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/f/e/2fee36e1a2ea88b2cfde70acce73182683b18a51.png)

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**Author:** ![Tofuszn](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/tofuszn/32/1019707_2.png) [@Tofuszn](https://forums.unrealengine.com/u/Tofuszn)\
**Post date:** [January 20, 2025, 5:07am UTC](https://forums.unrealengine.com/t/does-anyone-know-how-to-fix-this/2272723/2 "2025-01-20T05:07:51Z")

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I don’t have the exact same errors as you do, though I am also running into some HLOD problems myself. I have basically tried everything you have mentioned, additionally I even tried going into a past snapshot where building HLODs did work, and that did not work for me either. I also tried building HLODs on a completely separate computer and it went through the whole building process, and then just didn’t give me a message after loading.

Would love to have someone look into this!