[RESOLVED] Getting a web message "An attempt has been to invoke..."

Hello

New to jQuery.

I am trying to run a web application that uses jQuery. I keep on getting:
"An attempt has been made to invoke jQuey extension BaseControlPlugin.Private_zGetType for a control id that doesn't seem to be registered as a custom control.

InvokerId: #PNCForceCodeDropDownList_GenericDropDownControl."

Any ideas?

Thanks

Kev