unable to set wl.skydrive scope for my c# metro app
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The standard way of assigning the scopes for a c#/xaml app 
        
live:SignInButton x:Name="btnSignin" Scopes="wl.signin wl.basic wl.photos wl.skydrive wl.contacts_create wl.contacts_update" SessionChanged="btnSignin_SessionChanged" Margin="387,394,0,333"

is not working for windows 8 release preview and live sdk 5.2.?
The error showing that your access token doesn't have permissions. needed scopes wl.photos and wl.skydrive even after I added them in the above code.

Any alternative way or am I going wrong?
Thanks in adavance.