Yes, that exact one, on a recently downloaded DLS route. The asset is dependent on the mesh library <kuid2:328583:100004:1>, which is in itself faulty. It has a diffuse .texture file which Images2TGA cannot open, so cannot convert to .texture.txt. So it is unfixable for blokes like me. I just had to delete both the grass and the library from the route.
EDIT: Actually, the mesh library <kuid2:328583:100004:1> is what is not on the DLS. I managed to find it at a third party, but that is the topic of another recent thread. And, it was faulty as I described above.