Hey Jimmy,

I recently read your comment on the pachyderm group. Actually, I am also doing my thesis using pachyderm. I wonder whether you received the trail version from Arthur which includes barrier effect. I have a similar case with barriers, and the built-up version doesn't support edge diffraction. If you have the trail version, could you, please send me to "parikshit.nik@gmail.com". I would appreciate your help. 

Thanks,

Parikshit.