Using PSE 19 on dual boot Mac running Windows 10; Photomerge Panorama procedure with blend images selected aligns images but does not blend and adjust exposure. Same procedure on the Mac version works fine (OS 10.14) and blends, and adjusts exposure beautifully. The dialogue box that usually comes up regarding filling edges gets "lost" behind one of the image windows and seems to be part of the issue. Software freezes when trying to cancel or go back.