Just remembered another thing. Should this happen to you again you can also ask the modeler where he stores the texture data on his computer. Once you know that then all you need to do is create a folder in that same location named in the same way and drag and drop the textures there. That way you won't have to do anything in the maya file and maya will automatically find the textures. I hope this helps. Please let me know if you are able to resolve all the issues.