Issue FLEXENT-742 has been logged against AdobeFlex Builder Professional when used with the Automated Testing module and the AdvancedDataGrid. Specifically, when using Quick Test Pro to record a "select" action on a cell with a RendererProvider as the content holder, the following ActionScript error is displayed:
An ActionScript error has occurred: TypeError: Error #1009: Cannot access a property or method of a null object reference.
Add this file into the src folder of the Flex Builder project and include this delegate using the -includes option as follows:
-locale en_US -includes AdvancedListBaseContentHolderAutomationImpl