I have a lot of .obj's with .mtl the textures are made in Gimp 2.6 and saved as tiff files no compression. All the models load with the textures into Daz Studio 2.3.3.89 as well as into Vue 6 Poser 7 and Bryce 6 but they do not load into Carrara 6.2.1 if I try to import the texture map into Carrara using the tiff selection the files are greyed out. Why won't Carrara load the files?
 

MacBook Pro OSX El Capitan Ver 10.11.6