mp3 output profile disabled in sound-juicer

I've added deb-multimedia.org stable repository to apt, installed lame and
gstreamer0.10-lame and restarted sound-juicer, but mp3 profile can't be
selected. It appears in the edit profile list but not in the output format
list.
I've run sound-juicer with the debug turned on and it appears that it
detect the lame plugin.

Any ideea ?

Thank you!