Can't find DirectX

If the full screen windows loses focus let it be for an instant the game crashes. There is a workaround of enabeling AnitAliasing which seems to solve the random crashing but the game still crashes on alt-tab.

Please fix this notorious crash. I hear it's been one year. No rush...

Using a Nvedia GT 240 and the latest drivers for windows 7 64 bit.

Its something that was part of FFXI as well so i understand, an unlikely to be changed. (At least in the short term if ever).
Many ways to run windowed if you need to use your other screen/s.