I am also having this problem of it crashing during the file deletion, probably it fails 80% of the time, sometimes it looks like it worked and the file is even not listed anymore, but after refreshing the folder it comes back. I tried pausing, stopping, deleting a file that's not playing, nothing helps. The only thing that works is restarting the app, then it likely can successfully delete the first 1-2 files, but after that it starts crashing again. Yeah it's probably related to it not being able to close the files properly, likely even not the one you are trying to delete but previous ones you watched before that. It freezes during that notification "trying to close open files".