Thanks to everyone who responded to my postings so quickly. A quick response to those as I'm leaving for a short trip. I intend to follow Carl's advice as it gives me a chance to get more acquainted with U2. If I can't discover the source of the error messages, I'll attach my startup.int and settings.dfl files so wiser hands can have a look. John John H. Kessel Ohio State Universitykessel.1@xxxxxxxx