I am trying to load a series of photos from LRC into PS to focus stack. All the photos are in the same folder, were shot on a tripod in a lightbox. In one case i selected appx. 50 photos to stack (and in another as few as 10) in LRC. i went to Edit In, Open as Layers in photoshop. It starts working and loads a portion of the photos and then stops. Any thoughts as to why not all photos will open as layers in PS?