Sex and the City regular David Eigenberg, playing a nice guy, brings some warmth and humanity to Melanie Marnich’s chilly, disappointingly obvious play. Set in Africa, it revolves around two American couples and the effect their cheating has on the innocent partners. Eigenberg and the rest of the cast–playing three tart-tongued women (Julie Ganey, Jennie Moreau, and a very good Peggy Roeder) and another bumbling nice guy (Sean Cooper)–try desperately to bring their characters to life. But despite their efforts to add subtlety and lightness, Sandy Shinner’s staging is doomed by the script’s clumsy extended metaphors, ridiculous revelations, unmotivated action, and forced dialogue–the sort of problems that shouldn’t have survived a first draft. Through 5/7: Tue-Fri 8 PM, Sat 5 and 8:30 PM, Sun 3 PM, Victory Gardens Theater, first-floor main stage, 2257 N. Lincoln, 773-871-3000, $30-$40.