BUG: Error on File Recycle & Move
This error, or a similar error for recycle, come up if a move or recycle command is issued against a currently playing file, verified on version downloaded today, and checked as follows.
File must have a companion MP3/Audio file. MP3 file stays locked everytime and throws error. Manually removing the mp3. then running just the funscript and video will then delete without errors. The error halts the whole delete process and leaves the video, script, and audio files where ever they are.

so the update that added the folders fixed this on delete, since it advances to the next thing, and then prompts are you sure. however this still happens for a move. if it's possible to "learn the move parameters", advance to the next playlist item, delay a bit, and then "execute the learned move". it would likely fix the issue, that is if there isn't a more elegant way to release the mp3 file lock.