Yes, I had relied on Prefab too. However, all of a sudden it started going awry. I did remove it install it many previous versions, still the issues were there. So I realised that it has to do with something else. I reliased that it has had happened since I installed AIR2.0. I uninstalled it and installed 1.5 again and everything is working fine now. It is NOT an issue of Prefab it is an issue of AIR 2.0 FOR SURE. Prefab is very very good tool, at least for normal maps generation I had seen it.
-- Sushant
