I initially tried to install from DVDs which I had purchased in 2014 but the installer would not run. I then downloaded the latest installer and that seems to have worked OK. I have also installed 2 addons; VMAX-787 Dreamliner and Boeing 777 v181. I also installed all scenery (from DVDs). This took a while but appears to have worked OK. At the end of the install I was asked if I wanted to check for updates which I did and the process seemed to run as I would have expected and it also made some updates.
Having completed the install, I connected the Saitek Cyborg EVO Wireless joystick but it did not appear in the X-Plane settings window. I then closed and re-opened X-Plane whilst the joystick was connected but still not recognised. I tried a restart of the Mac and then X-Plane, again with the joystick already connected but to no avail. A check of the Mac System info app showed the joystick listed under USB. I also tried the above process with a Saitek P2500 Rumble connected; again it appeared in the Mac System Info but was not available in X-Plane.
I've looked at the X-Plane log file but it means little to me although it does seem to show a lot of deleted files - but I am guessing that they result from the post install update?
As requested, the log file is attached. I hope that helps and I am grateful for your efforts to find a solution.