“Because of a dispute between Mass MoCA and Swiss artist Christoph Büchel — over money and the installation of the work — the public may never see what has been touted as Büchel’s first major American museum show. The December opening was postponed, and just before Christmas the artist walked out after being told the museum had spent its $250,000 project budget. So far, Mass MoCA has been unable to lure Büchel back.”