I usually use contoursm when I start a new major area in my world, and the last one I used this procedure for successfully was created on July 7, 2022. So whatever happened to alter its performance must have happened sometime since then.

I am also interested and pretty well informed about this area and time. I also have a great interest in ancient Anatolia (now Turkey). The whole region from Greece to Mesopotamia is quite fascinating, and this is a pretty fair rendering of it. Very excited to see you working on this!

Sadly haven't had time today, but I'll play with it tomorrow.

Yes I rather like these hills. They're in the Ancient Realms catalogue, in case you don't recognize them. This is my second map with that style, and somehow they escaped my notice in the first.

Another update. I cleaned up the rivers and added hills.