Cant see wireframe in UV view only white color rectangle

Hello all
i follow the tutorial that is here : http://www.gamefromscratch.com/post/2013/09/06/Creating-a-game-sprite-Texture-mapping-Part-1-UV-Unwrapping-explained.aspx

and somehow i can see the wireframe in UV view after selecting the faces in the 3d view . only white color rectangle
what can bee the cause ?

im attaching image to show what i have :


as you can see i did check the live unwrap both in 3d view and in the UV window
Thanks !