Strange MAV on Vista

Hi there,

Somebody using the trial version of my application reported me a "Memory Access Violation".

After some investigation I sent to her a very basic program (a spinning cube) compiled with Blitz3D and, still, she has this "Memory Access Violation" on startup.

Here follows the code:

Graphics3D 640,480,32,2
SetBuffer BackBuffer()

camera=CreateCamera()

light=CreateLight()
RotateEntity light,90,0,0

; Create cube
cube=CreateCube()

PositionEntity cube,0,0,5

While Not KeyDown( 1 )
TurnEntity cube,0.1,0.1,0.1
RenderWorld
Flip
Wend

End

The executable is available here:
http://www.slide-effect.com/tmp/cube1.exe

Configuration where it crashes:
Vista 64-bit with an AMD Phenom 9850 Quad-Core Processor 2.50 GHz, 6GB RAM, NVIDIA Geforce 9800 GT display adapter.

I am aware of the texture flag problem on Vista, but this example does not use any texture at all.

Any idea? I really pull my hairs off on this one.

PS:It works perfectly on my 2 vista boxes and on my xp PC.