for some reason loading up a specific saved game and selecting end turn causes the game to crash

looking at the debug.err i notice this message right after end turn

Debug Message: Ship Design: Missing ship design for ship class auto-upgrade DrenginCruiser. Was this caused by pointing to a custom ship design? Blueprints must point to core or modded ships.
Debug Message: Ship Design: Missing ship design for ship class auto-upgrade DrenginDestroyer. Was this caused by pointing to a custom ship design? Blueprints must point to core or modded ships.
Debug Message: Ship Design: Missing ship design for ship class auto-upgrade DrenginBattleship. Was this caused by pointing to a custom ship design? Blueprints must point to core or modded ships.
Debug Message: Ship Design: Missing ship design for ship class auto-upgrade DrenginOverlord. Was this caused by pointing to a custom ship design? Blueprints must point to core or modded ships.