Unity Error

so im having an issue with unity loading materials from my exported file. before exporting i made sure i checked all the materials boxes and updated the material list and clicked save atlas and converted the textures to png then used the export button in cats (not blender) to export a fbx file. When i load it on unity there are no textures so i went to the materials tab on unity and clicked load external textures (after checking to make sure the atlas and fbx file cats exported was in the same folder) and clicked load and there are still no texures coming up. I even tried some different combinations on the drop down below the eternal textures thing.

is this a problem with blender, the cats add on, or unity?

im using blender version 2.79 so this could be messing with the cats add on since its probably updated for the latest version of blender and that means blender is making the cats file corrupt, or, cats is exporting corrupt files and unity cant read them, or, unity is having a problem reading the file cats exported.

Could it be that i need to use an earlier version of unity that was able to process these files?

ill go look for help in the right community, but i need to know which one to turn to.,so im having an issue with unity loading materials from my exported file. before exporting i made sure i checked all the materials boxes and updated the material list and clicked save atlas and converted the textures to png then used the export button in cats (not blender) to export a fbx file. When i load it on unity there are no textures so i went to the materials tab on unity and clicked load external textures (after checking to make sure the atlas and fbx file cats exported was in the same folder) and clicked load and there are still no texures coming up. i also tried some different combiniations of the drop down menus below the external textures thing.

is this a problem with blender, the cats add on, or unity?

im using blender version 2.79 so this could be messing with the cats add on since its probably updated for the latest version of blender and that means blender is making the cats file corrupt, or, cats is exporting corrupt files and unity cant read them, or, unity is having a problem reading the file cats exported.

ill go look for help in the right community, but i need to know which one to turn to.