"Unable to get representation of:
Abc"
When Abc is:
Abc =: 1 2 3 &$: : (4 : 0)
x + y
)
It is probably not related, but the installation of J also produced an error messages:
. not found: plot.ijs. But could easily find the ws.
. Error when loading startup.ijs. I also loaded this file manually.
Of course, I also had to fiddle with the security settings before installing J.
All this leads me to wonder if my Macbook Air install is optimal.