I just downloaded the updates to version 6.1 (from 4.5) and after about 2-3 turns, the game crashes to the desktop. I'm running with a

p3 866mhz
128MB RAM
SoundBlaster Live!
32MB GeForce 256

I tried to delete the file in the SAVE folder, but it didn't help.

I am on a cable\LAN modem and behind a firewall, and whenever I try to dl the 5.1-5.2 it asks for a name and password. the 4.5-5.0 worked fine