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// SAVE PDF
function savePDF(saveFile) {  
    var pdfOpts = new PDFSaveOptions;
    pdfOpts.alphaChannels = true;
    pdfOpts.annotations = true;
    pdfOpts.embedColorProfile = true;
    pdfOpts.layers = true;
    pdfOpts.spotColors = true;
    try {
        app.activeDocument.saveAs(saveFile, pdfOpts, false, Extension.LOWERCASE);
    } catch(e) {
        var newSaveFile = new File(saveFile);
        app.activeDocument.saveAs(newSaveFile, pdfOpts, false, Extension.LOWERCASE);
    }
}