when I select photos to be stacked, and then ctrl-G the selected set of photos, and then click the 's' key, my photos only momentarily stack and then almost immediately go back to their original layout. If I select the photos and then go to the menu, click on 'Photo' and then scroll down to 'Stacking' and attempt to access the 'Group into Stack' sub-menu command I find all the commands under the 'Stacking' sub-menu are greyed-out.
I'm using LR 1.4, on a PC system, with 2 Quad Core Intels, 2.4 GHz, VISTA, and 4 G of RAM.
It would seem that I've set something up, perhaps in my Preferences set up, which is not allowing me to stack pictures, however I can't find where to reset things so that I can stacj photos. Any advice?