UE 5.4 level becomes corrupt after duplicating fire blueprint,

UE 5.4 level becomes corrupt and crashes after duplicating fire blueprint, level crashes upon attempting to open from that point forward.
It can handle 5 or 6 of these animations, but heaven forbid you have more than 5 or 6 torches in a dungeon scene. Prior to this, level was stable, with no issues, no problems with nanite or lighting, but it cant handle duplicating a simple fire card blueprint?.
Infuriating as the level took days to model, now completely inaccessible. Does anyone know how I can recover this level?
I am running windows, with 32g ram and a RTX 4090, my hardware is maxed out so I dont think that is the issue.

It’s likely that you have something that triggers on when the level is started which causes the crash. Without more information I can’t help. Simply remove the code completely and if it doesn’t crash any more, the code is your problem; so that needs to be fixed.