I create a Post Build Script to copy a file on the three platforms, beside the application.
I just duplicate the script two times and move them to the targets (so all three are the same).
After a compile, I checked and the macOS (El Capitan) application is alone in its own folder (in the Builds ).
The file was copied into Contents:MacOS:
The application ID is set to App Parent Folder / Subdirectory is empty.
Nota: I have a in the OS X entry (in second place).
What happens ?
Xojo 2015r1.
Apple’s guidelines says that only Mach-O executable files should be in the MacOS folder; you may find that a future version of your application cannot be code signed with non executables in this location. A lot of issues with code signing are Apple clamping down on people not following the guidelines.
Hi Sam,
I was not thinking at that.
The file copy inside the macOS application was not done on purpose thus the question.
Oh okay; sorry I misunderstood, select ‘resources’ instead of app parent.
Thank you Sam, that was it.
That said, Resources Folder in the macOS contents, for me, means
my.appName.app:Contents:Resources
apparently now only: the other copied file
already had that 
It is sad to be old
In ANY Xojo made Mac App “Resources” is always the Resources dir inside the bundle
That is why I do not selected it in the Post Build Strip destination
Boooo
