I follow a tutorial for substance. After import the fbx file i have this checker after baking. In blender i only have materials with just a color. Only idea?

Ok i have found for checker issue. I use the checker pour see texel density. I want to change texel density to 1024 tha seem correct but unfortunlay that rescale my uv Islands. I search for rescale TD without rescale Islands
HI Stephane,
I don't use SP either, but that issue with the Texel Density seems like an issue of your Addon (ZenUV) (I am not familiar with that one, I rarely use 3rd party Addons).
If you change the Resolution of your Image (also known as Texel Density) in the UV Editor, that shouldn't Scale your UV Islands.
Unless I completely misunderstand the problem.