[Cartoweb-users] PDF legend error

[Antonio Camaiani]

Hi,
I'm trying to set up the PDF plugin, but when I choose to display the
legend "on map" or "in new page" I get this error:

Class : CartoclientException
Message : unsupported format for icon: /var/www/*/citta_class_0.png (layer: sp_citta_principali)
Backtrace:

do I have to set up the icon format for the layers somewere?
or there are some different configurations to give to the blocks.legend.type and/or blocks.legend.* in the exportPdf.ini?
thanks thanks
tony