geting Error on creating control

Aug 6, 2012 at 6:05 AM











<cc1:UpdatePanelAnimationExtender runat="server" ID="UPextender" TargetControlID="SlideShow" BehaviorID ="animation">













<FadeIn Duration="1.5" Fps="20" minimumOpacity=".1" /> 









</cc1:UpdatePanelAnimationExtender >



I am geting error on creating UpdatePanelAnimationExtender Control.

Error meassage is

<FadeOut Duration=".5" Fps="20" minimumOpacity=".1" />




Unknown server tag 'cc1:UpdatePanelAnimationExtender'.

Aug 6, 2012 at 6:16 AM

Please check in your code and describe what page this happening on and I will debug it.