Answered: "Unfortunately Launcher3 has stopped" exactly two days ago on my daughters VERSSED tablet

Hi. If the pop up frequency does allow you to perform some navigations and launch apps, launch Google Play store and download the 'Nova Launcher' to use in the place of the stock Launcher 3 app that proves corrupt. Otherwise, see http://www.satechhelp.co.za/7948/Fix-Launcher-3-Stopped-Working-Android-Tablet