why ajaxtoolkit modalpopupextender is not work in my project

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Why ajaxtoolkit modalpopupextender is not work in my project?This is work in another project but not work in my project
and exception occur (Only one instance of a ScriptManager can be added to the page.).When I remove scriptmanager,that is fine but is not work.Help me.Please give me a way to solve this.Thanks for all.

Posted 26-Jan-14 18:07pm

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VICK 27-Jan-14 2:30am

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Tom Marvolo Riddle · Answer 1 · 2014-01-26T19:00:00

Quote:
Only one instance of a ScriptManager can be added to the page.

This error occurs when you have more than one ScriptManager/ToolkitScriptManager in a page or it is added in the masterpage and its inherited page also contains a ScriptManager/ToolkitScriptManager .

You have to use only one ScriptManager/ToolkitScriptManager in a page.If the Masterpage contains a ScriptManager/ToolkitScriptManager there is no need for another one in its inherited page

Quote:
When I remove scriptmanager,that is fine but is not work

Possible thing is Popup doesn't contains any data.use debugger to find whether the data is binding or not