"I can confirm that adding at least one bit of audio with caption to the base layer fixed the problem in my case.  I do not know if audio ..."

"I notices a similar problem with an experimental slide that I recently made. The audio is in other layers that are shown at certain times..."

"It has resolved the problem. Thank you."

"I tried Jeff's approach, but still get the same message and it insists that I have only 3 days remaining in the trial, even though I am n..."