Update Missing links

Question

I would to batch the process of changing document to inches & update all missing links, save & close. The images are located in a folder in another volume. The script is changing document to inches but it is not updating the missing links. In what part of the process I'm failing? I see --> error number -1708
set source_folder to choose folder with prompt "Select folder containing Indesign Documents"
tell application "Finder" to set theFiles to files of source_folder whose name extension is "indd"
set myFolder to choose folder with prompt "Select the folder containing the graphics you want to update"
tell application "Finder"
  set myFiles to every file of folder myFolder
end tell
repeat with oneFile in theFiles
  tell application "Adobe InDesign CS4"
  set user interaction level of script preferences to never interact
  activate
  set myDocument to open (oneFile as alias)
  tell myDocument
  --++++++++++++++++
  tell view preferences
  set ruler origin to page origin
  set horizontal measurement units to inches
  set vertical measurement units to inches
  end tell
  end tell
  tell document 1
  set theLinks to (every link whose status is link missing)
  repeat with i from 1 to count of theLinks
  set thelink to item i of theLinks
  set theName to name of thelink as Unicode text
  set newpath to (myFolder as Unicode text) & theName
  try
  relink thelink to newpath
  end try
  end repeat
  end tell
  close myDocument saving yes
  end tell
end repeat

Answer 1

anyone got any other ideas about why some of the picture links are being listed as modified? It's an exceptionally annoying quirk, for the last 7 days the links on a 40 page catalogue the links were all fine, this morning however on opening the document it listed over 100 of the images as modified when nothing has been done to them.
When I actually update the picture links in the links palette, in the details panel for the picture the modification date does not change after updating the links, it's the date that it was placed that does change - not sure if this will be of any help in trying to solve whatever's causing this issue, as mentioned above it's exceptionally irritating that it happens and is something that's putting other people off using InDesign over Quark as Quark doesn't seem to suffer this problem, and it would be worse if it happened on some of the other catalogues we do as they're 80 - 100 pages in size!