 Gene Roddenberry (qv) wanted Alan Dean Foster (qv)to write the  final script for the film, but Harold Livingston (qv) thought him  too inexperienced and tried to hire Steven Bochco (qv), who was  unavailable; Michael Cimino (qv), who wasnt interested; and  Bill L. Norton (qv), who initially accepted but found it beyond  his capabilities. In the end Livingston did the job himself. He  disagreed repeatedly with Roddenberry over rewrites and other  matters, and quit and returned several times.