Browse error. Content not available

I use TVersity server, a Belkin router, Windows 7 and I can see all the list of my movies, musics and photos on the WD TV live. When I read small movie, maybe 1 GB, it’s OK. When I want to read a bigger file ( 4,5,6 GB ) I have a message: “Browse error. content not available”.

I used a wireless connexion. Maybe I have to used a wire connexion for my bigger files?

Thanks for help !

For HD movies, I always use wired connection, I know that others users can stream movies HD, I have, but, is not to stable.