Helping fixing a script

Question

I was looking for a script that would relink 18 images to 18 new images in a different folder. I ran accross this script but the file names need to be the same and I'm getting an error line 21 (placedFiles.push(placedItems[i].file.name);). Could someone help me out or point me to a script that would work.
<code>
#target illustrator
function linkReplacer() {
     var orginalUIL = app.userInteractionLevel;
     app.userInteractionLevel = UserInteractionLevel.DONTDISPLAYALERTS;
     if (app.documents.length == 0) {
          alert('Please have an "Illustrator" document open before running this script.');
          return;
     } else {
          docRef = app.activeDocument;
     var defaultFolder = new Folder ('~/Desktop');
     var psdFolder = defaultFolder.selectDlg('Please select the folder of your replacement files?');
     if (psdFolder == null) return;
     with (docRef) {
          var placedFiles = new Array();
          for (var i = 0; i < placedItems.length; i++) {
               placedFiles.push(placedItems[i].file.name);
          for (var j = 0; j < placedItems.length; j++) {
               var rePlace = new File(psdFolder.fsName + '/' + placedFiles[j]);
               if (rePlace.exists) {
                    placedItems[j].file = rePlace;
               } else {
                    alert('File "' + placedFiles[j] + '" is missing?');
     app.userInteractionLevel = orginalUIL;
linkReplacer();
</code>

Answer 1

script works as intended, the script assumes there are no missing links and yes the new folder must have files with names matching the ones in your document.  You'll get an error in line 21 if the file being evaluated is missing.
what do you try to accomplish with a script?