Hello there.
First of all, I am new to this Forum and I wanna state first how amazed I am by Maratis and the whole project. I am really glad I found this engine/forum, although it happened by accident.
So, just to cut a long story short, to all developers of the project: Keep up the good work! 
However, I am having some trouble with the lighting of some objects.
I tried several solutions that I found on the forum, like adding an edge modifier to an object and so on, but it didn't succeed so far.
Anyway, I started some tests and I am not sure if this is really gonna help, but, so far it seems like Maratis orientates by the number of the represented faces in my objects.
I assume that's not intended this way, is it?
Here are a few screenshots of the test meshes I used for.
the meshes in invisible mode, to make clear how many faces they have

and here the way they get lighted

also the material seems different, though it's the same one

Oh and by the way, I also downloaded some examples, like the YoFrankie tour, and the lighting is also messed up for me...
I am looking forward for any help in this case.