This is how Adobe Muse updates the widgets (not the best procedure in our opinion). We are working hard to follow the browsers and Muse as they evolve and we do this by regularly updating our widgets. You need the latest version of our widgets to ensure they will work on the latest Muse version and latest browser versions. Because Muse will simply add the updated widget as the new one instead of updating the actual widget, the best practice is to first delete the old version of the widget you are about to install (delete it inside Muse, not on your computer) and then install the updated version. Our widget updates are numbered so you can easily know if you have the latest version.