Hi. I'm having a problem with meshes exported from Blender. FBX, DAE, or even Blend files and letting Unity do its thing doesn't matter. If I select Tangents to import from mesh settings, I get this error: Anything with normal maps just breaks down at after this. It just displays a greyish black color on meshes. Using the calculate option isn't really an option, because mesh gets huge shading errors around UV seams. UDK imports tangents from FBX files just fine, I can't seem to make them work in Unity. I've tried recalculating normals, tried pretty much all combinations of export settings, tried edge splitting, triangulation, nothing seems to work? How can I import tangents exported by Blender?