After fix it works again. But all videos playing on my primary screen (MP runs on secondary screen).
<setting name="CurrentScreenId" serializeAs="String">
<value>0</value>
</setting>
Either enable automatic updates in online videos plugin settings or manually update your sites inside online videos (open manage sites from the "hidden" main menu and there select automatic update in hidden menu).Don´t find the fix for download. Did i miss something or overread it?
Hope this helps!