Blender textures turn pink

Why is Unity wrecking my Blender textures? They import and view perfectly well in Unity. But when I open them in Blender again they are all pink!
But they are still fine in Unity. This is a recent problem but I am still on Unity 4.2

this is just because it is missing the UV map file. Just reimport the uv map file onto your material in blender. no biggy :slight_smile: hope it helps!