Steve, it is Photoshop which has no layer support for 16-bit/channel images - that is THE great trouble with PS6! But PictPub DOES have full layer support in the high-bit range, (though they call the layers for "objects") - THAT is what's so great about it! It's great in many other ways to, but this high-bit support is a rarity. (PhotoPaint does have it to some extent, but it crumbles with large files, and many of the paint tools are 8-bit.)

I've been using PictPub since version 3.1, back in early 1994. It was way ahead of Photoshop in many ways - and it still is in some respects.

K
www.xaraxone.com/FeaturedArt/kn/
www.klausnordby.com/xara