I experience a very similar problem, but it only started after I installed the latest Voodoo3 3000 drivers for Win98 a few days ago.
Even smaller scenarios suffer; the Wittman solo Tiger scenario lasts only a couple of turns before almost everything on screen turns white.
My specs:
Celeron 2 533
Voodoo 3 3000
256 MB RAM
Windows 98 SE
I ran many turns without this problem with the previous drivers, and no other games show this problem.
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Felix Hack felixhack@acm.org
[This message has been edited by Felix Hack (edited 07-08-2000).]