Importing the Island Demo

Problems:

Every mesh is gray for Island Demo. I had to reconfigure all scripts.
(all scripts and textures are there however, they are either not linked to an asset or scripts are broken)

(I am a newbie) I just want step by step instructions for importing the Island Demo into Unity 3.x so that the scripts and textures are linked. ( I find a lot of documents saying to import, however, they do not go into the actual specific steps of importing)

I know I am doing something wrong, however, I am not sure of what step I am missing.

After pulling my hair out, I decided to assign the textures manually. This worked, however, I know there has to be a better way.