Ignorant Transparencies Gavin Brown Enterprise 620 Greenwich Street New York, NY 10014 September 14 - October 14 Gavin Brown's enterprise is presenting Ignorant Transparencies, the gallery’s first solo exhibition with Norwegian artist Bjarne Melgaard. Melgaard cannot stop. He is the most prodigiously compulsive, excessively promiscuous exhibitor working today. In the past 24 months alone he has staged…