Jean-Côme Charpentier wrote: >> >> Any solutions? I know, switch to fp package. Oops! > \documentclass[...]{...} > ... > \uespackage{fp} Not \uespackage but \usepackage and not fp but fltpoint :-) > \let\FPADD\fpAdd > \let\FPSUB\fbSub > \usepackage{multido} > ... Jean-Côme Charpentier