Lightmaping Tool Error.

Hi! I'm testing the External Lightmapping tool and get this error(on the stage of creating of a lightmap): "uv packing can't be done efficiently, consider a different lightmap arrangment". How can I consider a different lightmap arrangment if Unity does it for me automatically?

Additional information that may help: the model consists of lots of objects and has high polygonage.

So can it be helped?-)

Thanks in advance.

It means that your model most likely has overlapping UV's. Try remapping the mesh (flatten mapping, or unfold) and avoid overlapping UV's

Also you can change the lightmap size to 2048x2048