Black map after battles with patch

[IrishMike]

Ok ok guys I know this is quite a newb thing here. Since its related to the patch I decided to post here instead of the Tech parts of the Guild.

After the battles I get that famous black map, which i have to Alt + tab out and back again to get rid of. About a month ago I saw the solution to this problem, but now I can't find it. If anyone knows the solution to fixing this problem, plz direct me to. Again my appologies for quite embarrassing question. One would think being a grizzled old vet of both MTW and RTW I could fix this on my own. :embarassed:

[Browning]

Sorry unable to help you. But don't alt-tab if you can avoid it: this is thought to trigger the infamous load-game bug.

[Calmarac]

Sorry unable to help you. But don't alt-tab if you can avoid it: this is thought to trigger the infamous load-game bug.
I think this is misinformation. Alt-Tab only refreshes the graphics, it doesn`t reload the game, which is what causes the bug. I also get the black map problem on my old geForce2 :embarassed: and need to use Alt Tab when that happens (usually in winter I find)