One dance critic comes away disappointed from an advance screening of Robert Altman’s new dance film. “It is a disappointing hybrid that too often plays on dance cliches (a snapped Achilles tendon just hours before opening night, an ego-crushing bit of recasting, an outdoor premiere nearly washed out by a rainstorm, an alcoholic mother and litigious mentor) and never comes close to capturing the hour upon hour of class, rehearsal, repetition and intense, unwavering discipline so crucial to the art.”