I got my PMDG 777 for Christmas. It was the disc version, and when I tried to install it, I got this message: "Installation cannot continue. Your registry does not show a valid FSX installation location." Every time I try to install it I get that message. I'm confused, because it worked for the PMDG 737 NGX. I'll add that I installed the PMDG 737 on FSX disc version, and then switched to FSX SE and it worked. I'm worried that if I uninstalled FSX SE, I'd lose all of my addons, so what do you recommend?
