fontconfig

[Pedro Rebelo]

Dear all
I've had version 2.10.15 working fine on os x and since I've  
installed later versions I get the following error

Preprocessing graphical objects...No fonts found; this probably means  
that the fontconfig
library is not correctly configured. You may need to
edit the fonts.conf configuration file. More information
about fontconfig can be found in the fontconfig(3) manual
page and on http://fontconfig.org

any hints on how to go about fixing this?

thanks
pedro