After Brian Ripley suggested I get the latest version of R-devel, my show() problem, for an object for which I desired no special print method, was fixed. I am glad to report that all examples passed R CMD check for both libraries using today's version of R-devel. Frank -- Frank E Harrell Jr Prof. of Biostatistics & Statistics Div. of Biostatistics & Epidem. Dept. of Health Evaluation Sciences U. Virginia School of Medicine http://hesweb1.med.virginia.edu/biostat