Conversation so far:
What does the Gene Clark article say about the album white light?
In 1971, Clark released his second solo album, White Light
Was white light a success?
Launched to considerable critical acclaim, the album failed to gain commercial success
What did Gene clark do after the failed album White Light?
In the spring of 1971, Clark was commissioned by Dennis Hopper to contribute tracks to American Dreamer, a documentary that chronicled the fractious editing process of The Last Movie
Who worked on the album White Light with Gene Clark?
The album was produced by the American Indian guitarist Jesse Ed Davis, with whom Clark developed great rapport, partly due to their common ancestry
What songs were on White Light?
the album contained many introspective tracks, such as With Tomorrow, Because of You, Where My Love Lies Asleep and For a Spanish Guitar“
Did Gene Clark have any songs released in films?
Clark was commissioned by Dennis Hopper to contribute the tracks American Dreamer and Outlaw Song to American Dreamer
What does the Gene Clark article say about the album RoadMaster?
In 1972, Clark attempted a follow-up album. A&M terminated the project before completion. The resulting eight tracks were released in 1973 as Roadmaster in the Netherlands only.

Question: Why did they terminate the project?
Self-contained rewrite: Why did A&M Records terminate RoadMaster?