Random crash the middle of the game.

[Kikas]

Okay, so I have this problem:

Every time I join any CRPG server I can connect just fine, I can select my equipment, spawn and usually even run up to the heat of battle, but then it crashes.
Now I had this problem for some time now. The first time it happened was on Windows XP. So I ditched the game for a while. Then I installed windows 7 x86 and the crashes disappeared for a bit, but then they returned. However my friends have no issues on Win7x64 and pointed that out as a possible solution. So I installed a 64bit version of Win 7, and the crashes are still there. Each system change meant I redownloaded the whole game and mod.
When the game crashes, the error log looks like this (yeah sorry I'm polish):

Podpis problemu:
  Nazwa zdarzenia problemu:   APPCRASH 
  Nazwa aplikacji:   mb_warband.exe
  Wersja aplikacji:   1.0.0.0
  Sygnatura czasowa aplikacji:   4e1b0b6f
  Nazwa modułu z błędem:           nvd3dum.dll
  Wersja modułu z błędem:   8.17.12.8562
  Sygnatura czasowa modułu z błędem:   4e992849
  Kod wyjątku:       c0000005
  Przesunięcie wyjątku:          004e2790
  Wersja systemu operacyjnego:         6.1.7600.2.0.0.256.1
  Identyfikator ustawień regionalnych:   1045
  Dodatkowe informacje 1:   0a9e
  Dodatkowe informacje 2:   0a9e372d3b4ad19135b953a78882e789
  Dodatkowe informacje 3:   0a9e
  Dodatkowe informacje 4:   0a9e372d3b4ad19135b953a78882e789

Now I googled some of that, and it appears that the "nvd3dum.dll" is a Nvidia driver related file. So I downloaded the newest nvidia drivers, but that didn't help. So here comes the real question (since this is the only thing I haven't really tried):
Does anyone know what version of the nvidia drivers works with CRPG?

My spec is:
Win 7 Ultimate x64
Asus Geforce GT240
2 Gigs of RAM
Intel Core2 Duo E7500 2x3,3GHz
1TB disk space
Gigabyte P35-DS3L motherboard, using the integrated Realtek sound card

I can easily run the game on max in native, both single player and multi, but not CRPG. I fiddled with the options like there's no tomorrow, but no combination produced something which didn't crash and gave me that error.

Please help me with the driver version or in any other way. 

[dodnet]

Try to enable "force single threading" in the configure dialog when you start M&B. I had issues with Mount & Musket, which was crashing every few minutes. cRPG on the other hand was running stable without problems. I enabled "force single threading" and now M&M runs fine.
If that doesn't help, try lowering your graphic settings.

I'm using NVidia driver 280.26 with an Geforce GTX 260 and a similar configuration to your PC.

[Kikas]

Okay, it doesn't crash on Siege either. Only on the normal CRPG battle server.
However enabling single threading crashed with a new file instead of nvd3dum.dll I get msvcrt.dll.

[Kikas]

Nevermind, the crash is still there even with Single Threading Enabled.