Is the inserted file an Inventor assembly or DWF? Only these have the option to generate a parts list. Is the parts list button active? Is it giving you the options and then generating an empty parts list?
The inserted file is an Inventor Assembly.
The part list button is active.
When I click on it, I get the "select a component" window. Then I cllick ok, nothing happens. Not even a empty part list is generated.