I recently upgraded R to 1.9.1 for Mac from 1.8.1. I am not able to open the help pages online but get the message "If /usr/bin/open is already running, it is *not* restarted, and you must switch to its window. Otherwise, be patient ..." However, nothing happens. There are not any other windows open to switch to and I don't know what /usr/bin/open is! I'm using an eMac. I know the 1.9.1 download is only supposed to be for a PowerMac or PowerBook but 1.8.1 seemed to work fine on my eMac (before I downloaded 1.9.1 and deleted it!). Is there anything I can do to open html.help? -------------------------------------------- Dr. Martin G. McCabe Cancer Research UK Clinical Research Training Fellow Cambridge University Department of Pathology Division of Molecular Histopathology Box 231 Level 3, Lab Block Addenbrooke's Hospital Hilld Road Cambridge CB2 2QQ Tel: 01223 762084 Fax: 01223 586670 email: mcm41 at cam.ac.uk