Building a short video with imported MP4, video only no audio. Can add an audio recording through Replay and can view both together. BUT, when I publish to MP4 the video disappears. Both *.replay and .mp4 files are saved to my local c drive. IT installed an update for storyline, ensured my laptop was up to date, we followed the instructions to uninstall & reinstall replay, then we restarted my machine (windows 10). When I publish there is no video for my mp4...but like I said the sound was there. Can you help?