I occasionally get emails from folks telling me that the old “Papa Pihi HI” for “HI” fonts no longer works on more recent versions of Mac OS X. While I’ve always encouraged folks to abandon those fonts and use the “Hawaiian” keyboard and Unicode fonts built into Mac OS X, sometimes there are valid reasons for using the old fonts.
A few years ago the format for keyboard layout resources changed. The old format is actually a remnant of the pre-OS X operating systems. The new keyboard layouts are XML based, and I created one of these kinds of keyboard layouts a few years ago. Feel free to download and install it. You need to unzip the file, put it in /Library/Keyboard Layouts/, and either logout of your account or restart the computer. Then go into System Preferences -> International (or Language and Text, depending on the version of OS X), and select Input Source, scroll down and select “Papa Pihi HI”.
Please visit my page on Hawaiian language support in Mac OS to read more, and to download the new XML based “Papa Pihi HI”.