The “persistent broadcast” error can be caused by an uncommon bug on Youtube Stream Now. This has been reported to YouTube, it is something they will have to fix on their end. Unfortunately it isn’t something we can work around on our side.
Usually it can be resolved by temporarily setting up an Event stream and choosing that as the destination for Webcaster. After running that as a simple test, the Stream Now error is usually cleared. It will clear with time as well, but that seems to be random.
To create a Live Event on the YouTube webpage you can go here: https://www.youtube.com/my_live_events?action_create_live_event=1&ar=2 Then click to create a new event. Then you would enter a Title, set it to Type: Custom and click Create. After you create it, select Single-use stream key. Now on the Webcaster X2 you can go under Preferences -> Publish Destination and select the Title of the event here.