No particle effect rendering / Error saving build data

Hey everyone. I’m about to just rebuild the level I made, just testing out the sequencer. Not sure if its buggy, or user error animating keyframes while still in “sequencer mode” if that’s a thing… or both. I got the starter content particle effect fire and it wont render with the Cinema camera or player controller. Yes all the settings for visibility are checked, only one particle system in the scene. Plenty of disk space. Tried to view from all angle in-game.

What it is

What it should be

And now the build data wont save. Error for deleting, and saving the build data asset. There’s no other errors to get info from so I’m at a loss.

Just curious if anyone has any thoughts. Never had issues with the engine until I used the camera sequence editor.