This site is being deprecated.
Please see the official X‑Plane Support page for help.
Further to the answer provided by amelingu, I understand Logitech, the new owners of Saitek , have recently upgraded some of the software related to flight sim hardware.
The link can be found at http://support.logitech.com/en_us/downloads To gain access you will have to scroll down the page to just near the bottom. The updates are in alphabetical order. You will have to select the 64 bit download version for it to work with X-Plane 11. When you find the software you will also see an update for X-Plane .
To see what the software supposedly does, click the "plus" symbol which changes to a "cross" and the info is subsequently provided.
Hope it helps
This site is no longer being actively maintained.