Anna Marie de la Fuente After a multi-year hiatus, Pablo Stoll, who broke out with directing partner Juan Pablo Rebella on such hits as “25 Watts” and “Whisky,” is back in the director’s seat, albeit on his own, with “Summer Hit” (“El Tema del Verano”), a zombie pic now shooting on the beaches of Uruguay.Presented at last year’s Cannes Producers Network, film is co-produced by Temperamento Films (Uruguay), Ice End Content (Chile) and La Unión de los Ríos (Argentina) in association with Nadador