hi, my scene is an appartement with few furnitures so i baked the walls, the foolr lightmap and it worked perfectly but when it comes with the furnitures (i didnt unwrap the objects) i get some weird map most of the time its black i dont know i think its the uvs maybe unity dosent generate the lightmap uvs correctly.
for the objects that arnt generating light maps properly make sure (in their import inspector) that generate lightmap UVs is ticked (5th option down in FBXImporter). Then if it's not working rebake all your lightmaps and it should work fine.
thx that solved the probleme , do you know what "use in forward rend" option is for its in the lightmapping window under the mode option, google result almost shows nothing about it, i believe this is new a features in unity 3.3.