I have installed photoshop elements 13, via disc. After installing and restarting the computer, I am unable to start the program. On the start up menu, I select the "photo editor" button. After I press that button, it says that I must sign in to register my product. After I sign in, it does not open the program, it sends me back to the start up menu. If I make another attempt to open the program, it tells me that I need to sign in, again. This will happen each time I try to open photo editor. By the way, the photo organizer opens without any problem.