Hello, When I compile Synfig in the current version, these errors is the link. http://pastebin.com/1UhGfSBd To my knowledge, updating libpng fixes the problem. How should I proceed in this case? because this version of libpng in slackware is old. [ ]s Diogo Leal [estranho] http://diogoleal.com msn | gtalk: estranho at diogoleal.com