Thanks for the quick response,
here's the requested part of baldur.ini file
[Alias]
HD0:=C:\Program Files\Black Isle\BGII - SoA\
CD1:=C:\Program Files\Black Isle\BGII - SoA\CD1\
CD3:=C:\Program Files\Black Isle\BGII - SoA\CD3\
CD4:=C:\Program Files\Black Isle\BGII - SoA\CD4\
CD2:=C:\Program Files\Black Isle\BGII - SoA\CD2\;
CD5:=C:\Program Files\Black Isle\BGII - SoA\CD5\
I now see there is this ; mark, could that be it? What is it even doing there? I'll go try what happens if i remove it. Plus they seem to be out of order too, that's weird.
I was also wandering if program files as the installation directory would be the cause of problems, just as you said plainab. Hard to tell.