 In some cases, this is due to creative differences.ABC dealt with such a situation in the mid-1980s with their Tuesday night dramedy "Moonlighting" on three fronts, including actor Bruce Willis's growing disinterest in the series due to his building film career, Cybill Shepherd unable to handle the overwhelming workload of the series, and overlong scripts and overbearing production demands from series creator/writer/showrunner Glenn Gordon Caron.The series was never able to fulfill a full series run in its five seasons and had multiple production hiatuses, to the network's constant consternation.