AJAX :: Error - Panes Could Not Be Initialized. Details:Pane Could Not Be Added To The Collection - How To Fix It

Apr 19, 2010

I created the accordion control custom dll and added the dll my project reference. After adding the reference in my project, I just the drag and drop accordion control and added accordion panes, after adding the pane and clicked design view I am getting the following error. Even I added the selected index=0 properties also but I am getting same error

"Panes could not be initialized. Details: Pane could not be added to the collection. Details Object does not match target type.

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[Code]....

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[Code]....

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[Code]....

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[Code]....

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Sections of code below

[Code]....

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