Gameplay not showing imported assets after "Content (re)cook error"

Reference ID

265414de-43b7-7875-245c-b38a9be0577f

Please select what you are reporting on:

Creative

What Type of Bug are you experiencing?

Assets

Summary

It’s very specific so I think not many people experienced this bug.

Everything worked fine and gameplay was working as intended.
Then, I’ve imported a really bad asset in the game that caused many memory issues. Couldn’t start testing my game anymore because of that. After finally being able to remove everything of this asset from the project memory I was able to launch my project but all the “non fortnite library” assets weren’t showing in game anymore (Assets and Primitives).

My map is parented to a primitive in order to get its pivot point easely. That primitive was set to invisible in UEFN and everything parented to it seemed normal (and visible as intended). But In-Game, all these assets were invisible. After hours of searching, I finally checked and unchecked visibility of the primitive at the root of all the nomenclature and everything was now showing back to normal In-Game.

Small bug but almost caused me a faintness after I thought I lost weeks of work.

Steps to Reproduce

1- Import a gltf file converted to fbx with no merged faces
2- Launch the game to get the memory limit issue
3- Try to get rid of your mistake
4- Get rid of it now everything is broken
5- Replug everything needed
6- Start the game when everything looks fine to see that your map is gone
7- Check and uncheck every check boxes at the root of your parented assets

Expected Result

Once you got that visibility issue, you need to check and uncheck everything manually

Observed Result

Follow all the steps and it will cause your root model to not display anything anymore In-Game until you check and uncheck visibility

Platform(s)

windows

Additional Notes

Careful when converting gltf to fbx and importing it in Unreal. That may cause unexpected memory limit issues. These memory issues can cause even more issues.
Try importing your downloaded models in a blank map before importing them into your main scene.