Although Ron Winston worked as director on one of the 2 versions of this TV film (probably in '64),
Joseph Lejtes was credited by Maltin as director of the other version (probably '67). So both Winston and Lejtes deserve a director credit here - particularly since the film's hero seems to be patterned on a Polish immigrant (like Goldwyn) who becomes a movie mogul - and Lejtes himself had migrated from Poland.
This is Steven Bochco's first writing credit for the 1967 version of the film