“The Intervention” (* out of four) was a staggeringly awful romantic comedy whose script and story could have used more than a few interventions before filming began. A weekend getaway for four couples is eventually found to be an intervention for one of the couple’s marriages. Since none of the couples are likeable, you probably won’t care whether they remain together or break up. Good cast (including Jason Ritter, Clea Duvall, Natasha Lyonne) are helpless against a terrible script. Yet another rehash of “The Big Chill” that turns out to be a big bore. An inauspicious directorial debut for Clea Duvall (daughter of Robert).