Thx. I copied whole game to another location as you instructed. Dunno if that helped, but this time I had more luck. However, not for too long... I successfully entered game, checked my inventory, etc. Walked to nearest city and once I exited the world map, I appeared in the city... ...and then, for the fifth time, saw the same blue skies again...
...
minutes later
...
Started the game again, PLAY, appeared in the city for a second and BSOD. Btw.
Fallout 2 runs fine.