Claes and Kevin,
Thank you all very much. I found that the name of MTL file in the OBJ file was not named correctly. I spelled out he complete MTL file name and
it worked out. I also found that in some of the OJJ files you can not edit the mesh when you import it. I tried this and lost all of the textures for the file.
I guess the OBJ files are a bit hit and miss and really depends on who and how the files are created.
Thanks again for your help.. This is my first time using this forum and it is very helpful.
Best,