Exception Exporting to Excel with a Preview column

With standard admin website pages, if I try to export a EntityDataGrid that has a "Preiew" link (i.e. Text) column to Excel I get an exception on the htmlWriter.Flush(); line of the EntityGridView's Export method.

Extender control 'ModalPopupExtenderDescription' is not a registered extender control. Extender controls must be registered using RegisterExtenderControl() before calling RegisterScriptDescriptors().
Parameter name: extenderControl

Any tips?

Hello,

The exception you are receiving is very similar to the following forum post which contains a solution.

Thanks

-Blake