Error on import custom model

[OlaHaldor]

I've imported my custom model into the asset editor and I'm given an error.

GetColors(): format not supported [System.NotImplementedException]

Details:
No details
System.NotImplementedException: GetColors(): format not supported
  at (wrapper managed-to-native) ColossalFramework.Importers.Image:GetColors (int)
  at ColossalFramework.Importers.Image.GetColors () [0x00000] in <filename unknown>:0 
  at AssetImporterAssetImport.LoadXYSTexture (System.String textureBaseName, ColossalFramework.Threading.Task`1 modelLoad, ColossalFramework.Threading.TaskDistributor subDistributor) [0x00000] in <filename unknown>:0 
  at AssetImporterAssetImport+<LoadTextures>c__AnonStoreyAE.<>m__2B () [0x00000] in <filename unknown>:0

I renamed each of the texture files to see whether it was related to this. I found that my normal map was producing this error. I have no idea why. Devs, maybe you can figure it out?

 

[OlaHaldor]

Figured it out. The normal map was 16-bit.

 

[Akyhne]

Had the same problem. Thanks for the solution!

 

[muffinsen99]

@OlaHaldor @Akyhne I have the same error, but don't understand what you mean by normal map being 16-bit and how to fix it. Could you explain it closer?

 

[mntoes]

You get the rough explanation here.