Well,I did as I said in the above post,and the game did actually begin this time,though it took about 15 or 20 minutes to do so.

I played a couple of custom battles without incident.
I went on and started a Koinon Hellenon campaign,but only played a few turns because movement on the map is choppy and changing turns takes about 2 - 2.5 minutes each.
Then went back to custom battle and played a battle against Baktria without incident.
Started a second one after that against the Sweboz,I think,and went to get a soda while it loaded. When I got back a minute later,it had CTDed.

At least I seem to have installed it right.