There is an update to this issue, which can be found in this post from 01.12.21
We are aware of some instances where editing a Re/Play lecture recording using the Re/Play editor has caused playback issues with the video. Our supplier has identified that this is related to a bug in the current version of the software, which will be fixed with an automatic update this week. Therefore, from the 27th of November this should no longer occur.
If you have experienced this issue, have a video which won’t play after editing, or have a video that urgently needs editing before the 27th November, please contact email@example.com for further help.
We apologise for any inconvenience this has caused.