Interactive video pauses after first overlay
I have one local video on a slide, and two overlay slides with a knowledge check question on each. On success of each question I'm running an advanced action to assign a value to a variable and then continuing. On failure, I have "continue" selected as Last Attempt action. When I preview the course, the video plays and shows the first overlay with the first knowledge check question, but regardless of whether I get the question right or wrong, the screen freezes and doesn't continue. Any suggestions what could cause this? I'm using Captivate 2019. Thanks!
Edited to add: sometimes the overlays don't show at all - the video pauses but nothing happens.
