Loadsprite and Vista

LoadSprite results in an MAV when the flag is set to 2 ( Alpha), under Windows Vista.

sprite = Loadsprite "picture.tga" <-- works
sprite = Loadsprite "picture.tga",2 <-- crash to MAV

Admin rights under Vista enabled. Kompatiblity-Modes tested, without success.

Is it Vista or DX10 or the GPU?
Can anybody confirm this?

System: Acer Notebook, Intel Centrino, Gforce 7300 Go
Vista Home Basic
( sorry, no more details. Its not my Notebook )

Shodan

Try this:
http://www.blitzbasic.com/Community/posts.php?topic=71111

Wasn't a vista problem, but a chipset issue (running on XP).

Looks like, that Gforce Go GPUs in Notebooks have the same problem.
I´ll try to test it.