All Normal turns pink

Development Programming & Scripting Blueprint
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1

All my Normal objects suddenly changed from light purple to pink. When dragged into the node editor, they appear red and fail to function properly. After re-downloading them from the FAB, the downloaded versions still display as pink.

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image1368×447 109 KB

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image939×350 88.3 KB

I have not altered the Normal or project settings; you may refer to my normal detail.
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image1920×1644 1.22 MB

:sob:

2

Hello @MAXINEMA913 welcome to the forums!

That’s weird and I’m not an expert but I’d try the following fixes (in this order):

  1. Flip Green Channel: In Image 3 I can see Flip Green Channel is checked. Try unchecking it and see if the normal recovers
  2. Delete derived data cache — Close UE5, navigate to your project folder and delete the DerivedDataCache folder, then reopen. UE5 sometimes caches corrupted texture data that persists even after reimport
  3. Check if the source file is actually a normal map: Right-click the texture Asset Actions / Reimport and verify the source .png/.tga is truly a normal map and not accidentally swapped with another texture

Hope this helps you!!

Let me know if any of this works or if you need more help!

3

Hi @BRGJuanCruzMK thank you for your reply!

  1. Whether the Flip Green Channel is ticked or not, Normal appears pink.
  2. I tried delete the DerivedDataCache folder, unfortunately, still doesnt work.
  3. I am pretty sure it is a Normal map, (it works before :smiling_face_with_tear:)

Thank you very much for your reply!! I think I shall need to try another approach. :worried:

4

Hi !!

Looking at your screenshot

A few things stand out though:

1. Texture Group is set to “World” this should be WorldNormalMap for normal maps. Change it, save, and let UE5 recompress the texture. This can affect how BC5 compression is applied.

2. The BC5 format itself Try changing Compression Settings temporarily to Default (DXT1/5) and see if it still looks pink — if it looks correct with DXT5, then the BC5 reconstruction is the issue.

3. The asset may be corrupt in your project Try: right-click the texture → Asset Actions → Reimport with New File, and point it at a freshly downloaded source file.

4. Check if this affects ALL textures or just this one it could be a FAB plugin import bug specific to your UE5 version.

What version of UE5 are you on?