Page Reload problem in asp.net using jquery

hi

 

yes its not reloading  properly
in this application i am using Jquery & ajax both.

i am getting fallowing errors
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Error: Sys.ArgumentTypeException: Object of type 'AjaxControlToolkit.ModalPopupBehavior' cannot be converted to type 'AjaxControlToolkit.DynamicPopulateBehaviorBase'.
Parameter name: instance

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Error: Sys.InvalidOperationException: Type AjaxControlToolkit.BoxSide has already been registered. The type may be defined multiple times or the script file that defines it may have already been loaded. A possible cause is a change of settings during a partial update.
http://code.jquery.com/jquery-1.8.2.js line 564 > eval:1647