If you did an update install you are missing this:
"/Library/ScriptingAdditions/Adobe Unit Types"
If you still have your Previous System folder around just copy the ScriptingAdditions folder and its one file into your new root Library folder. If you disposed of it you download the "AdobeUnitTypes" file from
HERE. Unzip, create the folder and put the file in it.
Or you can always reinstall Photoshop....
Francine
Schwieder