Basically going to link you to the issue I created in the SL forum.
After about an hour or so of playback, the App collects an UnhandledException. Short call stack that goes immediately into system.Windows.dll. (The details are in that post).
Interestingly, if I catch the UHE in the debugger, and manually set e.Handled to true in there, the video continues playback instead of whiting-out the player.
But... the thumb (on the playback slider) has stopped moving, and the download progress track stops moving... though I can keep playing the movie well beyond the end of the progress track.
I've also noticed that when I break back in to the code and check to see if the Download progress property has changed, it hasn't. It seems like most of the events from the plugin stop firing, or something.
Any help in figuring this out would be well appreciated.
PB Systems/20th Century Fox