This site is being deprecated.
Please see the official X‑Plane Support page for help.
If X-Plane is refusing to move, you can reinstall, however, make sure you uninstall the copy you have now and upon reinstallation, select "Change Destination..." on the installer when prompted, and make sure the folder path is directly on the desktop.
Sorry if that is an inconvenience; if a Mac user on the forums could enlighten me on Mac permissions, that'd be great.
You can run installer with clean install. By default, X‑Plane will install to the Desktop. Though it can be installed elsewhere (by clicking the Change Destination button), it is strongly recommended that it be placed on the Desktop so that the folder can be found in the future, and so it has correct permission settings. Check destination folder with read/write permissions or move your X-Plane folder to another location. You can read more about installation of X-Plane here and about Moving X-Plane Out of the Mac Applications Folder here. As far as I can see here after reinstalling the black screen have disappeared.
The X-Plane installer defaults to the desktop for any installation. The latest installer will actually not even let you pick the Applications folder as the install location.
See this KB article for instructions on moving it. Be sure to unzip the file download before continuing past step 1.
In a Mac we don't have this installation window, see :
and it's not possible to do it even with the KB article ....
I'm in despair ....
This site is no longer being actively maintained.