I agree with several others, removing let there be flight and the game starts up. There are still some minor issues, like the Core Eyes mod I am using, before the update, my character had blue eyes, afterward, they are black and kinda freaky. Can't fix it, trying to change anything or add anything else makes the game CTD on loading a save. Separately, I seem to have found a bug in which I can't find a fix anywhere...my Journal doesn't have messages. Its just blank. Can't figure out what caused it, but it was working fine prior to the update. And before anyone asks, I do not use anything that mods the messages in Journal.