nhauck 0 Newbie Poster

I am trying to build or recreate the MattBerseth.WebControls.AJAX ModalPopupAnimationExtender and I keep getting this javascript error "AjaxControlToolkit.Animation.GenericAnimationBehavior is null or is not a object" I have tried searching on google but I really can't find anything that fixes the probelm. Does anyone have any suggestions?

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