ab FX 62.0 (64-Bit) funktioniert folgendes Script nicht mehr

/* ##### Tableiste_unter_Inhalt #### */
(function() {


  if (location != 'chrome://browser/content/browser.xul')
    return;


try {
    var vbox = document.createElement('vbox');
    document.getElementById("navigator-toolbox").parentNode.insertBefore(
        vbox, document.getElementById("browser-bottombox"));
    vbox.appendChild(document.getElementById("TabsToolbar"));
}catch(e) {} 






})();

/* ##### Profilordner.uc.js ##### */
  (function () {


       if (location != 'chrome://browser/content/browser.xul') return;


       const buttonId = 'Profilordner';
       const buttonLabel = 'Profil Button';
       const buttonTooltiptext = '';
       const buttonIcon = 'url(data:image/gif;base64,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)';

       function buttonFunction() {
                    Services.dirsvc.get('ProfD', Ci.nsIFile).launch(); 


       }; 

       var button = document.createElement('toolbarbutton');
       button.id = buttonId;
       button.setAttribute('class', 'toolbarbutton-1 chromeclass-toolbar-additional');
       button.removable = 'true';
       button.setAttribute('label', buttonLabel);
       button.setAttribute('tooltiptext', buttonTooltiptext);       
       button.style.listStyleImage = buttonIcon;

       button.addEventListener('click', function (event) {
          if (event.button == 0)
             buttonFunction();
       });

       document.getElementById('navigator-toolbox').palette.appendChild(button); 


       var toolbars = Array.slice(document.querySelectorAll('toolbar'));
       for (var i=0; i<toolbars.length; i++) {          
          var currentset = toolbars[i].getAttribute('currentset');      
          if (currentset.split(',').indexOf(button.id) >= 0) {      
             var j;
             if (i == 0) j = 1
             else j = 0;         
             toolbars[j].currentSet += ','+button.id;         
             toolbars[i].currentSet = currentset;      
          };      
       };

    }) ();