Apparently its a big issue as i know. I had the same thing and by removing MP widget from screen and bringing back it works but together with it all the widgets disappear too ( thats what i used to get). So i tried instead of removing just open MP itself first time and play.Then back to widget and stop it or keep it on the important thing is that connection is established. Now you can close MP and widget supposed to work. It seems like widget losing connection to data. Usually it used to happen after rebooting. Did it few times and now it works fine right from start.