I like to try alternative methods than deleting stacks of troops one by one cause that also sounds time consuming. But let me explain few things that got me, once again, through this crashing error:
I tried deleting all the barbs I could find, even the animals were not safe, but no luck there so I decided to do things differently -> LOAD -1turn -> I didn't counquer Babylon-city, I didn't move 3 of my workers, 1 pikeman stood still instead of moving after being completed, I attacked barb city radius, but didn't kill anyone -> TADAA I survived crashing turn.
I know Leoreth you don't get much info out of this like you said. Just wanted to point out how unlogical and minor that annoying glitch might be that is crashing these games.