Hmmm,
I do not wish to appear as inept as I probably am, BUT, how would I do that ? 😕
The "Save Portable Project As" package in question is pretty much the same as the one that I sent to you several days ago, when I had queries about poor export quality.
All the images are the same, the only tweaks have been in the transitions, timings and durations, relative to the audio track, so maybe you could take a look at those images, if you still have them;
BUT, …………
It could all be a waste of your time, as you said that the whole thing worked fine. If that is the case then the problem I am seeing, will possibly not reveal itself to you, so I guess I will just have to live with the niggle ?
Curious though?
One would assume that portable is, as you say, portable.
I have repeated the process a couple of times, and each time the same images refuse to load until I have 'tweaked and saved' them.