I can't import materials or textures from OBJ or 3DS I am trying to import an object and the zip file I obtained had the .OBJ plus the images that correspond to the materials, but when I import it and I go to the materials and/or textures of the object, they aren't there.

Also, I tried to import a 3DS file with its MTL, but when I open the materials window, the materials are there, with different names but they are all the same, therefore the object appears all grey. 

I would really appreciate if someone could help me out!

Thank you very much for your time!
Strangely, I had a similar problem with 3DS in cycles, but was able to apply textures and materials perfectly in Blender render.

In Blender Render, I needed to play around in the materials and textures panel a little, opening one of the image files. The rest were automatically applied, but I needed to add a lamp to see it. 

For Cycles, I had to open nodes and do the textures that way.