Thank you 99jon for the information but, unfortunately, it still doesn't work.
I had Elements 11 and 12 installed on my Windows 7 64-bit computer. I uninstalled Elements 11 and rebooted. Using Open With, I associated PhotoshopElementsEditor.exe with a .jpg photo. "Always use the selected program to open this kind of file" was checked. Elements 12 opened with no photo visible.
I even went into Control Panel, selected Programs, then Make a File Type Always Open In a Specific Program. I associated .jpg with PhotoshopElementsEditor.exe. When I double-click on a .jpg file, Elements 12 opens (in Expert mode--which I normally use) but with no photo. When I double-click the file name again the photo now appears in Elements 12 but in the Quick mode.
Am I going to have to tweak something in the registry to get this to operate properly?
Sorry for the hassle!
Jerry