Kai, your GREP string only seems to work in sets of two and not when there are multiple instances.

Valentin, here’s the updated script that should work as expected. But be aware that it will not work when there’s a regular space between the entry and the number, only a tab is allowed. So make sure that all the entries have proper tabs before the number.

Please let me know if this does work.

app.doScript(main, ScriptLanguage.JAVASCRIPT, undefined, UndoModes.ENTIRE_SCRIPT, "Fix Duplicate TOC Entries");

function main() {
    var myDoc = app.activeDocument;
    cleanPrefs();
    app.findGrepPreferences.findWhat = "(.+?)sd+r(1sd+r)+";
    var foundText = myDoc.findGrep();
    for (var i = foundText.length - 1; i >= 0; i--) {
       var curEntry = foundText[i];
        app.findGrepPreferences.findWhat = "r(?=.)";
        app.changeGrepPreferences.changeTo = ",s";
        curEntry.changeGrep();
        app.findGrepPreferences.findWhat = "(?<=, )(.+?)t(?=d+)";
        app.changeGrepPreferences.changeTo = "";
        curEntry.changeGrep();
        }      
    cleanPrefs();
    }

function cleanPrefs() {
    app.findGrepPreferences = app.changeGrepPreferences = null;
    }

NOTES:
When you run the script you’re prompted with a dialog to enter the amount of pages that you want packaged at a time. Of course, the script does not accept any amount that is less than one, or more than the amount of pages in the document

If you want to package each and every page individually (as Julie originally requested) just enter an amount of “1”.

NOTE: The script has one drawback: Any empty pages don’t get packaged. This might be a deal-breaker for some. I hope to find a solution to this problem sometime soon.

//created by Ari S. --  designerjoe@outlook.com
// Package entire document individually by the amount of pages at a time that you want

app.scriptPreferences.enableRedraw = false;
var srcDoc = app.activeDocument;
var srcTitle = srcDoc.name;
var srcPages = srcDoc.pages;
var pgLength = srcPages.length;
var srcW = srcDoc.documentPreferences.pageWidth;
var srcH = srcDoc.documentPreferences.pageHeight;
var srcPgLength = srcPages.length;
var start = 0;
var range, end, newDocName, isEnd, fileName;

// ------- HERE YOU CAN CHANGE ANY PACKAGING SETTING THAT YOU WANT. TRUE means 'ON', and FALSE means 'OFF': ---------

var copyingFonts = true;
var copyingLinkedGraphics = true;
var copyingProfiles = true;
var updatingGraphics = true;
var includingHiddenLayers = true;
var ignorePreflightErrors = true;
var creatingReport = true;
var includeIDML = true;
var includePDF = false;
var pdfStyle = "";
var forceSave = true;

var myDialog = app.dialogs.add({name:"Package Export Range", canCancel:true});
with (myDialog) {
    with(dialogColumns.add()) {
        with(dialogRows.add()) {
            staticTexts.add ({staticLabel:"Enter the amount of pages you want to package at a time"});
            with(dialogRows.add()) {
                var myRangeBox = integerEditboxes.add({editValue:1});
                }
            }
        }
    }

if (myDialog.show() == true) {
    range = myRangeBox.editValue;
    if (range == 0) {
        alert("0 is not a range!...");
        myDialog.destroy();
        exit();
        }
    else if (range > pgLength) {
        alert("Range can't be more than the amount of pages");
        myDialog.destroy();
        exit();
        }
    run();
    }
else {
    myDialog.destroy();
    exit();
    }
        
function run() {
    while (!isEnd) {
        var newDoc = app.documents.add({pageWidth: srcW, pageHeight: srcH});
        newDoc.masterSpreads[0].baseName = "garbage_master";
        end = start + range;
        if (end >= srcPages.length) {
            end = srcPages.length;
            isEnd = true;
            }
        var firstPage = srcPages[start];
        var lastPage = srcPages[end - 1];
        for (var j = start; j < end; j++) {
            var srcPage = srcPages[j];
            if (srcPage.pageItems.length == 0)
                continue;
            var newPage = newDoc.pages.add();
            srcPage.duplicate(undefined, newPage);
            srcMaster = srcPage.appliedMaster;
            var newMaster;
            try {
                newMaster = newDoc.masterSpreads.item(srcMaster.name);
                newMaster.name;
                }
            catch (myError) {
                newMaster = srcMaster.duplicate(undefined, newDoc);
                }
            newPage.appliedMaster = newMaster;
            }
        for (var k = newDoc.pages.length -1; k >=0; k--) {
            if (newDoc.pages[k].pageItems.length == 0){
                try {
                    newDoc.pages[k].remove();
                    } catch (myError){};
                }
            }
        newDoc.masterSpreads[0].remove();
        if (firstPage.side === PageSideOptions.LEFT_HAND) {
            newDoc.documentPreferences.startPageNumber = 2
            }
        if (newDoc.pages.length == 1) {
            fileName = "Page " + firstPage.name;
            }
        else {
            fileName = "Pages " + firstPage.name + " - " + lastPage.name;
            }
        createPackage(newDoc);
        start += range;
        if (start == srcPages.length) {
            isEnd = true;
            }
        }
    }
        


function createPackage(myNewDoc) {
    var targetFolder = new File("~/Desktop/" + srcTitle +"/" + fileName + "/");
    var flag = Folder(targetFolder).create();
    var versionComments = srcTitle + " " + fileName;
      if ( flag === true){
        var garbageFolder = new File("~/Desktop/" + srcTitle +"/Delete This Folder/");
        Folder(garbageFolder).create();
        myNewDoc.save(new File("~/Desktop/" + srcTitle + "/Delete This Folder/" + fileName + ".indd"))
        myNewDoc.packageForPrint (
        targetFolder, 
        copyingFonts, 
        copyingLinkedGraphics, 
        copyingProfiles, 
        updatingGraphics, 
        includingHiddenLayers,
        ignorePreflightErrors,
        creatingReport,
        includeIDML,
        includePDF,
        pdfStyle,
        versionComments,
        forceSave);
        myNewDoc.close(SaveOptions.no);
        var myTempFiles = Folder(garbageFolder).getFiles();
        for (l = myTempFiles.length - 1; l >= 0; l--) {
            myTempFiles[l].remove();
            Folder(garbageFolder).remove();
            }
        }
    }

That’s interesting, because the script is supposed to delete that layer every time it runs. Did you try to manually delete the entire layer?

Refer to this article for help on installing a script: https://creativepro.com/how-to-install-a-script-in-indesign-that-you-found-in-a-forum-or-blog-post.php

Please upload a screenshot of the error. Did you copy the code from here or from your email? Because copying from the email can be problematic.

It can be done, but is it bit more complicated, I think. I’ll try to write something if I have a chance.