Getting GFX Error Message, but the Game works o.O

[NexXxus]

Right now i'm playing Zelda Oot in Project 64 1.6 on my EeePC 901 wich has an Intel GMA945 GPU.

Sometimes when playing the game, the following error message appears:

While processing graphics data an exception occurred. You may need to restart the emulator.

The thing is, when i click on OK, the game runs further with fullspeed and without any problems.

So what does that message mean?

my drivers are up2date btw.

__________________

My System: C2D E6700 @3.4ghz | Asus P5W DH Deluxe | 4GB DDR2 800 | eVGA Geforce GTX 260 55nm SC-Edition
Tutorial: Hardware Antialiasing in PCSX2 (DX9 only)