end turn crash

hi guys been changing a few things mainly recruitment and settlements nothing too extreme, have also added in a few new regions everything loads up fine just crashes when i end turn, ive gone back over all the files ive edited and cant see any mistakes! im also using the -show_err shortcut but nothing comes up for this crash? all other mistakes give an error report just not for the end turn crash?

hope someone else has had this problem and can help me out, it would be very much appreciated as have finished most of the editing i want to do and just want to play it now!

thanks in advance for any help!