Im in the middle of a stream and out of the nothing my stream turn into a black screen with just my mouse visible. I am using the free version, but i have never had this before while streaming.
This is de video im talking about, at 52:55 it turns black: http://nl.twitch.tv/perseus11/b/369488713
Did you launch the game in full screen mode? Free Xsplit can only stream Windowed mode for games.