pages in opposite order

@edward382075877wr1  You should be using the ME version of InDesign.

That's not really a problem if you need to reverse page order because you're working on something in Arabic or Hebrew. If that's the case, then using a version of InDesign that supports these writing systems is a no-brainer. I think that, no matter what you've done, we can walk you through getting it into a properly formatted RTL document.

But if you have some other reason to want to reverse page order, then getting one of these page-order-reversal scripts working is going to be your best bet. 

/**
* Sets sections for reverse numbering 
* @ return Void 
*/

function reverseNumbers(){
    var d = app.activeDocument;
    var p = d.pages.everyItem().getElements();
    var ds = d.documentPreferences.allowPageShuffle
    d.documentPreferences.allowPageShuffle = false;
    
    //Clear any existing sections;
    var s = app.activeDocument.sections;
    if (s.length > 1) {
        s.itemByRange(1,s.length-1).remove();
    } 
    var pn;
    for (var i = 0; i < p.length; i++){
        pn = p.length - i;
        try {
            d.sections.add({continueNumbering:false, pageStart:p[i], pageNumberStart:pn})
        }catch(e) {}  
    };   
    d.documentPreferences.allowPageShuffle = ds;
}


app.doScript(reverseNumbers, ScriptLanguage.JAVASCRIPT, undefined, UndoModes.ENTIRE_SCRIPT, 'Reverse Numbers');