Need to fix this error : Type 'System.Web.UI.WebControls.CreateUserWizard' does not have a public property named 'LayoutTemplate'.

Hi all,
 i am usingVWD 2010 andwant to create a website supported under .net 3.5.
The deafault mater page has the loging pgaes already set up (.net 4.0) which is very good and helping to start.
But once i changed my project to run under .Net 3.5 , i could not have the account register webpage working and getting this error :
Parser Error Message: Type 'System.Web.UI.WebControls.CreateUserWizard' does not have a public property named 'LayoutTemplate'.
 
Any idea how can i fix this issue ??
 
Thanks ..
 
 
 
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