Thanks everyone for the support, ideas and pointers in the right directions. I'm now successfully installing packages with dependencies using the GUI. Downloading the command line tools in Xcode was the key, I believe.
Best wishes Ross Dr Ross Tinsley Head of Research | Editor IHTSJ International Hospitality and Tourism Research Centre HTMi | Hotel and Tourism Management Institute | Switzerland e. rtins...@htmi.ch | w. htmi.ch | t. +41 (0) 41 488 11 [[alternative HTML version deleted]] _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac