Bug in Photoshop Lightroom. When I go to export a number of files, I have the resize option selected to resize the long edge with the "do not enlarge" checked. This works on the vertical files but not the horizontal files. The files I'm exporting ar DNG files created by the same camera and resolution. I've tried resize by inches and by pixels but still only the verticals ar resized, the horizontals are native resolution. I am running Mac OS 10.6.5 with Lightroom 3.4. My only solution was to select the horizontals separately and then export resize hight and width with only the width value. I didn't have this problem with previous versions.