Standalone Player output not able to run on brandnew MacBook Air

My daughter (lives in Berlin;-)) ) has got a brand new top-of-the line 13" Air.
I have made a slideshow shared via iPad - looks fine, but I wanted to impress her with the quality of the Standalone Player output.
She has tried several times and the error does not give us a clue.
I know that OSX does not come with Flash or is there any other component she is missing.
My son has an older MacBook Air where the show plays beautiful.
Kindest regards - Per Falkjær

What does the error message say?