Can't add reference resolution on Canvas


I updated my unity from 4.6.020b (beta) to 4.6.1f1. One thing which is bothering me is i can’t add a reference resolution component. and in old canvas(es) it is showing component not found. Please help me out on this. I really can’t get my project done like this. cause every canvas is having reference resolution and now it doesn’t have any. I am posting this in a forum also.

its called a CanvasScaler now - just replace it with this and everything should work as before.