Stayed in the one spot for quite a while then moved to new area with lots of resources. Unpacked settlement on one turn. Next turn declared Kingdom. IIRC, I had the necessary parchment (at least the button showed up). Got a crash message.
Loaded up the save, hit the button again, works sort of normally. Get the message about founding a Kingdom, but seem to lose control of the cursor. Cannot recover cursor in that play through. Quit and loaded save again, works ok.
Attached.