Writing metadata to file iphoto 11

Question

I came across a script (by Andrew Turner, linked to from here -http://stuffforlife.blogspot.com/2009/10/face-recognition-in-adobe-photoshop.htm l) that writes the iphoto metadata to the original file, allowing the metadata to be read by other apps.
However, i get an error
Here's the script.
-- This applescript will set the exif keywords, name, and comments of all selected iPhoto
--   images using the information current in iPhoto.
-- Author: Andrew Turner (http://highearthorbit.com)
property copyright : "©. All Rights Reserved."
property URL : ""
property exifToolOriginal : "_original"
-- True retains copyright, False means Public Domain
property Copyrighted : "True"
tell application "iPhoto"
  activate
          try
                    copy (my selected_images()) to these_images
                    if these_images is false or (the count of these_images) is 0 then ¬
                              error "Please select a single image."
                    repeat with i from 1 to the count of these_images
                              set the keywordslist to ""
                              set this_photo to item i of these_images
                              tell this_photo
                                        set the image_file to the image path
                                        set the image_title to the title
                                        set the image_filename to the image filename
                                        set the image_comment to the comment
                                        set the assigned_keywords to the name of keywords
                              end tell
                              repeat with j from 1 to the count of assigned_keywords
                                        set the keywordslist to keywordslist & " -keywords+=" & item j of assigned_keywords
                              end repeat
                              set output to do shell script ¬
                                        "exiftool -title='" & image_title & ¬
                                        "' " & keywordslist & ¬
                                        " " & " -comment='" & image_comment & ¬
                                        "' " & " -Copyright='" & copyright & ¬
                                        "' " & " -CopyrightNotice='" & copyright & ¬
                                        "' " & " -Rights='" & copyright & ¬
                                        "' " & " -Marked='" & Copyrighted & ¬
                                        "' " & "'" & image_file & "'"
  do shell script "rm '" & image_file & "'" & exifToolOriginal
                    end repeat
                    display dialog "Exif writing complete."
          on error error_message number error_number
                    if the error_number is not -128 then
  display dialog error_message buttons {"Cancel"} default button 1
                    end if
          end try
end tell
on selected_images()
          tell application "iPhoto"
                    try
  -- get selection
                              set these_items to the selection
  -- check for single album selected
                              if the class of item 1 of these_items is album then error
  -- return the list of selected photos
                              return these_items
                    on error
                              return false
                    end try
          end tell
end selected_images

Answer 1

yeah, i just noticed that...!
when exiftool is working, does it write the metadata to the original raw file or the jpeg.
trying to find info on how to get round the "warning duplicate orientation tag in IFDO" error, has me scratching my head
i also have aperture 3 trial, wil this allow face keywords from iphoto to be added as metadata to the file?
cheers