^ Basically, I've been compiling a level and running around without an issue. However, if I /devmap to restart the same level while I'm in it, the level doesn't load. More worryingly, if I load this level from a target_level_change in a previous level, I also get this error, as demonstrated in the video.
I'd just like to know what directly causes this and what I can do to ensure it doesn't happen. If anyone's able to steer me in the right direction, it'd be appreciated.