Cant get any Batch Script to run

Question

Hello together,
first of, Thank you for this community.
It´s a shame, i can´t get any Batch script to run.
For example a PDF making Batch with a folder selection.
I always get the alert, no matching files found.
I use cs 5  on a  g 5 with osx 10.8.2
here is the script..  should not be a big thing !?
why does no file fit in the "mask" ?
here is the script
ADOBE SYSTEMS INCORPORATED
Copyright 2005-2006 Adobe Systems Incorporated
All Rights Reserved
NOTICE:  Adobe permits you to use, modify, and
distribute this file in accordance with the terms
of the Adobe license agreement accompanying it. 
If you have received this file from a source
other than Adobe, then your use, modification,
or distribution of it requires the prior
written permission of Adobe.
Export to PDFs.jsx
DESCRIPTION
This sample gets files specified by the user from the
selected folder and batch processes them and saves them
as PDFs.
Edits by Patrick Mineault:
- only .ai files processed
- files saved in same folder as the input files
- export files have name (oldname)_export.pdf
- PDF settings: non-editable / acrobatLayers=false
      for maximum compatibility with Preview
// Main Code [Execution of script begins here]
// uncomment to suppress Illustrator warning dialogs
// app.userInteractionLevel = UserInteractionLevel.DONTDISPLAYALERTS;
var destFolder, sourceFolder, files, fileType, sourceDoc, targetFile, pdfSaveOpts;
// Select the source folder.
sourceFolder = Folder.selectDialog( 'Select the folder with Illustrator .ai files you want to convert to PDF');
// If a valid folder is selected
if ( sourceFolder != null )
    files = new Array();
    fileType = "*.ai"; //prompt( 'Select type of Illustrator files to you want to process. Eg: *.ai', ' ' );
    // Get all files matching the pattern
    files = sourceFolder.getFiles( fileType );
    if ( files.length > 0 )
        // Get the destination to save the files
        //destFolder = Folder.selectDialog( 'Select the folder where you want to save the converted PDF files.', '~' );
        destFolder = sourceFolder;
        for ( i = 0; i < files.length; i++ )
            sourceDoc = app.open(files[i]); // returns the document object
            // Call function getNewName to get the name and file to save the pdf
            targetFile = getNewName();
            // Call function getPDFOptions get the PDFSaveOptions for the files
            pdfSaveOpts = getPDFOptions( );
            // Save as pdf
            sourceDoc.saveAs( targetFile, pdfSaveOpts );
            sourceDoc.close();
        alert( 'Files are saved as PDF in ' + destFolder );
    else
        alert( 'No matching files found' );
getNewName: Function to get the new file name. The primary
name is the same as the source file.
function getNewName()
    var ext, docName, newName, saveInFile, docName;
    docName = sourceDoc.name;
    ext = '_export.pdf'; // new extension for pdf file
    newName = "";
    for ( var i = 0 ; docName[i] != "." ; i++ )
        newName += docName[i];
    newName += ext; // full pdf name of the file
    // Create a file object to save the pdf
    saveInFile = new File( destFolder + '/' + newName );
    return saveInFile;
getPDFOptions: Function to set the PDF saving options of the
files using the PDFSaveOptions object.
function getPDFOptions()
    // Create the PDFSaveOptions object to set the PDF options
    var pdfSaveOpts = new PDFSaveOptions();
    // Setting PDFSaveOptions properties. Please see the JavaScript Reference
    // for a description of these properties.
    // Add more properties here if you like
    pdfSaveOpts.acrobatLayers = false;
    pdfSaveOpts.colorBars = false;
    pdfSaveOpts.colorCompression = CompressionQuality.AUTOMATICJPEGHIGH;
    pdfSaveOpts.compressArt = true; //default
    pdfSaveOpts.embedICCProfile = true;
    pdfSaveOpts.enablePlainText = true;
    pdfSaveOpts.generateThumbnails = true; // default
    pdfSaveOpts.optimization = true;
    pdfSaveOpts.pageInformation = false;
    pdfSaveOpts.preserveEditability = false;
    return pdfSaveOpts;
is my problem really that stupid ?
is it only working in cs 3  ?

Answer 1

Mr. Schneider, Brilliant =) and weired
on windows 7 it runs perfectly. even with the prompt commented out ?!?!?!
Why is it not working on a maC ?
now i have so many more ideas to optimize my workflow...
i´am not shure how to get into this ..
if i have to send out datafiles i have to do several things.
1.collect images and fonts
2. throw unused colors away
3. check if there is white overprinted,if yes fixing it.
4. put black on overprinting
5.clean up empty textfields, unfilled objects, and usesless anchorpoints
6.unlock everything
7. save the ai
8.convert in paths
9.save an *_path.ai
10.make a printable PDF with our XYZ. Joboptions
11. preview pdf, optional with a watermark sized 100% 100% to the artboard / artboards
12. wonderfull would be a print out
this is just a wishlist.. i want to learn it. . how to do
will be a hell of scripting or not ?
is it usefull to do somethings in an action and load the action as a script ?
In scriptinghappiness best greetings from Germany..