Problems with lightmapping

Hello everyone!

I'm having little trouble with beast lightmapping in Unity3d 4.0.1f2 PRO...

I'm creating a mobile videogame (like The Legend Of Zelda: Phantom Hourglass) and I created diferent pieces in maya to assemble the final map latter in Unity3d. With realtime lights, I have the image above:


when I bake the light, the result isn't good...


at the intersection of the different pieces of the "mountain" there is a shaded line that should not be there!!!


I've played with different options of beast and model import, but i've always have the same, or similar result... increasing the lightmapping resolution works very well but is not an option because then, it generates a lot of files

do you know what's the problem?

another question related to shaders is the leafs in the "mountain" ground. These are plains with transparent/diffuse shader, but I want this leafs to receive shadows from the other objects, and it doesn't work?

thans in advance and sorry by my english!

Sergi

 

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