I've got a Slingplayer pro-HD. I did the set up a few days ago, and at first it worked. However, most of the time I get only sound and a little bit of video - and this is the most awkward. I got, for example, movie's subtitles on my screen - both on my Laptop (Windows) and my Iphone - but that's all the video I get. There is a screenshot example attached.
Thanks a lot