Assertation Failure

[Eishand]

After reformatting and reinstalling Diablo II LoD with patches 1.10 and no cheats or hacks, my game either completely freezes the computer or brings up this error message after freezing the game. It happens both in Battlenet and as TSP/IP Lan player, after an unspecific amount of time, with different characters (Amazon, Sourceress). I'm on Win 2000.

Assertation Failure:
Location: Fog/Src/AsynchData.ccp, line #589
Expression: dwRat=====WAIT_OBJECT_0

Can anyone help me get rid of this?

[NegotiatorSmith]

Assuming that your install isn't corrupt and considering the fact that you just formatted, you might have forgotten to update your hardware drivers. Make sure that you have the latest drivers for your video card, sound card and motherboard chipset installed, as well as the latest version of DirectX.