Hello,
The docs for save_bmp_pf on the site and also on the man pages have the syntax for save_bmp_pf a bit wrong.

The syntax written is:

int save_bmp_pf(PACKFILE *f, RGB *pal);

when it should be:

int save_bmp_pf(PACKFILE *f, BITMAP *bmp, RGB *pal);

Only a small thing but it confused me first time

http://www.allegro.cc/manual/api/loading-image-files/save_bmp_pf

The same thing also applies to the following two functions:

save_tga_pf
save_pcx_pf

Fixed in SVN, thanks.