Screen recording - Try Mode - crashing during fine tuning

This did nothing. I've also tried using previous versions of the storyline, and it's not helped. I can't be uninstalling and reinstalling storyline multiple times a day just to get an hour or so of work down. I have not received any reply from your help desk.

I have discovered that if I try fine-tuning a different slide after it crashed, then it will work, but not the slide that it crashed on the first time. There is not rhyme or reason to it though as I've been working on different files and it seems to effect random slides without any explanation (both try and view mode).