Hi, I am trying to compile a simple presentation using the s-pre-03 context's style whitout success. The .tex and .log file are as attach in this mail. Can somebody help me, please? Thank you very much. Eduardo F. Cassiraga Departamento de Ingeniería Hidráulica y Medio Ambiente Universidad Politécnica de Valencia C/. Camino de Vera, s/n 46022 Valencia - SPAIN Tel: +34 963 879 613 Fax: +34 963 877 618 E-mail: efc@dihma.upv.es