[yocto] core-image-sato + firefox for pandaboard

[Davide Soldan]

Hi to all!
I'm new in building images with yocto for my pandaboard. Trying to build core-image-sato (http://maniacbug.wordpress.com/2012/08/03/pandayocto/) all works fine, but now I want to add some packages to this image.
So proceeding like mentioned here https://lists.yoctoproject.org/pipermail/yocto/2012-May/009175.html, downloading meta-browser layer and adding this layer to build/conf/bblayers.conf and adding the package firefox to conf/build/local.conf I've got this error:

ERROR: No recipes available for:
  /home/davide/yocto/poky-denzil-7.0/meta-browser/recipes-gnome/gnome-settings-daemon/gnome-settings-daemon_2.32.1.bbappend
  /home/davide/yocto/poky-denzil-7.0/meta-browser/recipes-graphics/libxi/libxi_1.6.1.bbappend
  /home/davide/yocto/poky-denzil-7.0/meta-browser/recipes-support/nspr/nspr_4.9.4.bbappend

So I found, for example, gnome-settings-daemon under meta-openebedded (dependency declared in the README file of meta-browser). Adding the layer "meta-openembedded/meta-gnome" to build/conf/bblayers.conf to satisfy the gnome-settings-daemon dependency I've got the following different error:

NOTE: Error expanding variable populate_packages
NOTE: Error during finalise of /home/davide/yocto/poky-denzil-7.0/meta-openembedded/meta-gnome/recipes-support/goffice/goffice_0.8.17.bb
ERROR: Unable to parse /home/davide/yocto/poky-denzil-7.0/meta-openembedded/meta-gnome/recipes-support/goffice/goffice_0.8.17.bb

someone knows how to help me?
Thanks