I have installed Lightroom 4.2 and Elements 10. Although I have installed it so that Elements 10 shows up in the Edit Photo menu, when I click on that it does not copy or load the photo I have edited in Lightroom into Elements. There is just an empty Elements 10 screen except that there is a dialogue box showing some of my Nik software plugins. The dialogue box does not work. I had the edit photo in Elements 10 working in Lightroom 4.0 before I installed the upgrade. to Lightroom 4.2. Does anyone know how to fix this?