Terrain error: Failed to get pixels of splat texture

Unity Engine
1

Hello Unity Devs,

We are getting the following errors opening some scenes containing Terrains:

GetPixels32 failed: insufficent pixel buffer size (1), must be at least 4 x 4
[C:\buildslave\unity\build\Runtime/Graphics/Texture2D.cpp line 1229]

and

Failed to get pixels of splat texture
[C:/buildslave/unity/build/Runtime/Terrain/SplatDatabase.cpp line 241]

When clicking on latter the error in the Console, the editor highlights the terrain asset. However neither error provides any useful information in the Console/Editor.log. We have tried setting the Read Write Enabled Import flag for all textures referenced by the Terrain, however, the error persists. Anything else may be causing these errors? (Unity 5.6.4p2)

Thanks!

2

At some texture in terrajne it is necessary to include transparency (if it * .png) and to switch off compression.
Sorry my English.