When trying to localize a Macintosh 512K, some people have reported that
the process resulted in the keyboard becoming completely unmapped. That
is, keys were interchanged throughout. This can happen when to the
standard U.S. Macintosh 512K keyboard (no numeric pad).
The problem results from the U.S. standard keyboard having a different
number of keys than the international keyboard. The number of keys affects
the mapping. If you are using a Spanish keyboard, select "international
keyboard" from the Keyboard CDEV in the Control Panel. Using any Macintosh
Plus keyboard also eliminates difficulties.