Hi Thankful Kiwi,
it seems you are missing promods-model2-v255.scs in your load order.

Sorry, I should clarify: The town of Krosno is added by Poland Rebuilding, but you'll get the same crash on the road to Rzeszow when driving from south to north with just RoEx and Promods plus the road connection (north to south works fine for me, and apparentely for others as well). I did a bit of ...

Actually, Poludniowa Polska does not cause the crash between Krosno and Rzeszow. You'll get the same crash when driving on a map combo with Promods and RoEx only. No Poludniowa Polska, no Poland Rebuilding.