This site is being deprecated.
Please see the official X‑Plane Support page for help.
I'm not with Laminar Research, just a fellow simmer in the UK, but you may have to send a copy of your X-Plane 11 Installer log.txt file to LR as a bug report. Please click on link to show you which file I mean, assuming you don't know already :-)
This site is no longer being actively maintained.