I am using Mezzmo 4.0.3.0 on a wireless network with a Samsung EH5300 TV. Frequently, in the middle of a video, I get a "Please check network connection" message and the TV reverts to its prior state. It seems to be totally random, although I notice it most often with shorter videos, like music vids. I just watched a two hour movie without a problem, and the next video I watched, a music vid, shut down with the error message about 2 minutes in. I didn't have this problem with Samsung Allshare.