Summary
I have had the same issue for a long time on UE 5.5, 5.5.1, and 5.5.3, and I have even installed older versions (epic distributions and source-built engines), but the problem never gone.
The issue was that when I tried to export Metahuman textures (2d baked textures) the exported images (Asset actions > Export) were empty and without any color (but it had a size, it seemed that it had not formatted correctly), but after all I realized the solution and it was simple yet made me such a frustration:
1- Duplicate the texture that you want to export.
2- Right-click on the duplicated image and select “Texture source compress with JPEG”
3- Export the duplicated image and it works
I didn’t find any similar issue on the unreal forums, I hope this helps someone.
Please select what you are reporting on:
Creative
What Type of Bug are you experiencing?
Assets
Steps to Reproduce
Exporting metahuman textures into PNG
Expected Result
No 2d texture issue
Observed Result
Exporting a 2d texture with PNG format
Platform(s)
Windows, Unreal Editor 5.5