Unrecoverable Graphics Driver Error?

When I moved from the Cinamatic after killing The Hunger in Moddok Crevice to the next loading screen, a dialog box popped up and said: "Guildwars has encountered an unrecoverable graphics driver error and must terminate."

I have had no problems before now. Sure, I have a laptop, and my graphics card is the ATI Radeon 345M IGP, which does stink. However running GW at the lowest settings makes it workable.

In short, what happened? The driver is the most updated version, and there are no other apparent effects.

Also, GW wont load the next town without the same error. The town is Wehhan Terraces. I was able to load Cavalon on another character, but my dervish is stuck as GW crashes when loading her.