A Lake Bell comedy about marriage

As someone who loved Lake Bell's comedy In a World, I was looking forward to Bell's next movie, I Do ... Until I Don't. Oops. My expectations weren't entirely rewarded by Bell's new comedy about couples who participate in the filming of a documentary about marriage. The film is being made by an embittered British woman (Dolly Wells) who believes that marriages should have an opt-out clause that comes into effect every seven years. Bell's Alice is married to Noah (Ed Helms), who -- along with his wife -- struggles to make his window blinds business grow. Carol's hippie sister (Amber Heard) lives with her lover (Wyatt Cenac) in what they proudly bill as an open marriage. Cybil (Mary Steenburgen) is married to Harvey (Paul Reiser); it's her second marriage and it's gone stale. Steenburgen almost always is a joy to watch, and Bell and Helms are fine, as is everyone else in a strong cast, but I Do ... Until I Don't turns out to be wan and predictable. I wouldn't give up on Bell, though. She seems intent on writing, directing and starring in comedies that have something to say. She has the talent to strike again and make it work.