AppleScript to resize images and save with new name

Question

I want to make an apple script, which resizes all images of a folder regardless what kind of filetype.
The source folder will change every day.
With the script i want to choose a source Folder, resize all images and save the files with my jpeg options in the same folder, but with adding  „_ipad“ in the filename.
I tried to edit an existing script from this forum, but in Photoshop 5.1 i get the error-message "This function is possibly not available in this Version" in line 18 "save in file newFileName as JPEG with options myOptions"
How can i save the documents with new name in the existing folder?
Thanks.
This is the script i’m working with:
set inputFolder to choose folder with prompt "Wähle einen Ordner:"
--set destinationFolder to choose folder with prompt "Wähle einen Zielordner" as string
tell application "Finder"
          set filesList to (files of entire contents of inputFolder) as alias list
end tell
tell application "Adobe Photoshop CS5.1"
          set UserPrefs to properties of settings
          set ruler units of settings to pixel units
          repeat with aFile in filesList
  open aFile showing dialogs never
                    set docRef to the current document
                    tell docRef
                              set newFileName to my getBaseName(name)
  --resize image height 240 resolution 72 resample method bicubic sharper
  change mode to RGB
  resize image resolution 72
                              set myOptions to {class:JPEG save options, embed color profile:true, quality:12, format options:progressive, scans:3}
  save in file newFileName as JPEG with options myOptions
                    end tell
  close the current document saving no
          end repeat
          set ruler units of settings to ruler units of UserPrefs
end tell
on getBaseName(fName)
          set baseName to fName
          repeat with idx from 1 to (length of fName)
                    if (item idx of fName = ".") then
                              set baseName to (items 1 thru (idx - 1) of fName) as string
                              exit repeat
                    end if
          end repeat
          return baseName
end getBaseName

Answer 1

This seems like a Photoshop error not an AppleScript one. Have you looked in the Photoshop dictionary to see if the command you are getting the error on exists and if it has those options?
If all you want to do is resize image files and save the resized image file you might want to look at Automator. Specifically the Scale Image action under Photos.
regards