Accordion control gets 'extended' when we switch to designer

Question

Hi,

I add an Accordion AJAX toolkit control.

When I switch back to designer view and get an error like 'Error creating control'.

When i switch to the code view all the AJAX controls have been replaced by ACCORDIONEXTENDER with the same ID and so gives an error like 'Toolkit Accordion does not have Extender property'.

Why does Visual Studio Web Express convert all the AJAX controls with EXTENDER controls and then throw an error ? Any workarounds ?

Thanks.