This site is being deprecated.
Please see the official X‑Plane Support page for help.
Please double check that you have the latest version available here and that it's the correct format (only the Linux installer comes in separate 32 & 64 bit versions).
You might try asking in this X-Plane.org forum specifically for Linux users. I don't use Linux and won't be of much help for any additional troubleshooting.
Our support for using X-Plane with Linux varies.
This site is no longer being actively maintained.