Image textures in saved game runtime app

When I play the game in blender the image file textures appear on the mesh, but when I ‘save game as runtime’ and play it from my intel mac, the meshes are blank. clues?

Did you pack all the textures into the blend file.?
File / External Data / Pack into .blend file

I did! What else could be the problem?

Try playing the game from the blend file in the app itself (RMB / show package contents) to see it its the blend file itself or some other effect.