This site is being deprecated.
Please see the official X‑Plane Support page for help.
Hi Phil!
Try installing the necessary libraries first:
sudo apt install libc++1 libc++abi1
If the installer still does not show up, open a terminal in the folder with the setup file inside and post the error message after running the setup from the terminal:
./X-Plane\ 11\ Installer\
Cheers!
This site is no longer being actively maintained.