I downloaded and installed the demo yesterday; today I played it.
It crashed after 10 turns and windows shut it down. The only thing I did different was plot artillery.
One game play issue I'm wondering about is the infantry dismounted their HTs every time they came under in-direct fire from 82mm Mortar. The jumped out and were pinned or suppressed. There they remained for a few turns getting clobbered and i the HTs kept on moving. I had to bring the HTs back and finally, after 8 turns got the infantry mounted and moving again. Then a MG opened up on them and out jumped out again. Why is this? Why would they not stay in their HTs which should protect them from small arms and shrapnel.