Wont auto register well and prior manual register seems missing.
I didnt have the prior version befor 2.1 but it had decent reviews for the price. Apparently the prior version had manual image aline adjust that is now missing and there is no help file. If you have a simple well defined scene it will auto-register fairly well. On a rural scene with trees and bushes it wouldnt register the images very well which gave it a more "painted" type appearance, not what I was after. Photoshop Elements 11 did a much better job of registering and both the auto and manual modes seemed to work well. It wont boost the range as well as LC but with post processing in PSE11 you could get similar results with better registration. Actually, picking the best of bracketed shots and applying filters with Aperture was almost as satisfying.
Shutterbug Dave about Light Compressor