Try
Blue Skies,
Ritch
ThisAddIn.engine.AutoPrint = true
before evaluating any R code. Manually needing to enable AutoPrint is a 'by design' bevhavior of the REngine. You can find out more in the R team's R-Internals document, Chapter 1.6: http://cran.r-project.org/doc/manuals/r-release/R-ints.html#AutoprintingBlue Skies,
Ritch