Mac-Carbon-0.66 has been released. Download it from the CPAN or SF.net.
(Note: it may take time for the release to propagate to the various download mirrors.)
Changes:
Fix _Unix2Mac to be more robust, by making it more limited: it must point
to a file (existing or not) in an existing directory. This limitation is
not unusual, and it is extremely rare that you would want to pass a path
to a file in a directory that did not already exist.