In my response to my own query, have since "discovered" this.
In the place holders where there are supposed to be images and which are now just blank, grayed out spaces, there are several icons - a square for the selected colour (also blank for those images so marked), a figure for the stars (this shows up as designed), a question mark (which I read as an indication that the storage media is now off-line) and then, the last item which is a white square box with lines in it. Used to read this a the "recipe" box. Interesting thing now - click on this and Wow, the corresponding thumbnail image now comes up.
Guess I've got to write this off to being one of those "undocumented features" in 7.1.3...