Corner points for georeferencing are no longer created in the ENVI image header for any of the capture methods (there is no "geo points" entry).
This was the result of some recent changes to the fundamental radiometry driver organization that changed the source of the data for the georeferenced points. There was a compound flag check that needed to be modified as a result, but only half of the check was correctly changed (the result was that geo points were only generated during preview mode). This check has been fixed and will be integrated into 4.5.2.