My Flex application is divided in modules, and I am having an advanced data grid in one of them. While clicking on the advanced data grid, I am getting following error: TypeError: Error #1034: Type Coercion failed: cannot convert mx.managers::DragManagerImpl@1ae729c1 to mx.managers.IDragManager. at mx.managers::DragManager$/get impl()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\DragManager.as:202] at mx.managers::DragManager$/get isDragging()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\DragManager.as:242] at mx.controls.listClasses::AdvancedListBase/dragScroll()[E:\dev\4.y\frameworks\projects\advancedgrids\src\mx\controls\listClasses\AdvancedListBase.as:6821] at Function/http://adobe.com/AS3/2006/builtin::apply() at SetIntervalTimer/onTimer() at flash.utils::Timer/_timerDispatch() at flash.utils::Timer/tick() I fixed it by addin...