i found a bug in the new build, which is, apart from that, very stable for me!
bug: when being in the game saves menu and moving around, downloading some gamesaves, go through the lists of downloadable gamesave, it sometimes reboots the system. there is no specific game, where it reboots. try downloading gamesaves from 10 different games and scroll to the menu of downloadable saves. you will get this error then i think.