[...] his recent films, including the "Da Vinci Code" sequel "Inferno" and "In the Heart of the Sea," have struggled at the box office. How producers and the Directors Guild of America handle the film's directing credit will also be closely watched. Lord and Miller had previously been considered among Hollywood's most sought-after directors, having turned "The Lego Movie" and "21 Jump Street" into unexpected and widely praised comedy hits. [...] reports have circulated that the duo, who favor improvisation and irreverent humor, clashed with Kennedy and co-writer Lawrence Kasdan, a "Star Wars" veteran and executive producer.