add: var em = Components.classes["@mozilla.org/extensions/manager;1"] .getService(Components.interfaces.nsIExtensionManager);  gUpdateWizard.items = em.getIncompatibleItemList(null, null, nsIUpdateItem.TYPE_ADDON, true, { }); 
context:   onUpdateEnded: function() {    if (gUpdateWizard.items.length > 0) {      // There are still incompatible addons, inform the user.      document.documentElement.currentPage =         document.getElementById("mismatch");    }    else {      // VersionInfo compatibility updates resolved all compatibility problems,      // close this window and continue starting the application...      close();    }  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/31a1a1c480acd5fd3ebad2e19d0d25fb2df73af3/update.js/clean/toolkit/mozapps/extensions/content/update.js