I followed the answer given by Valerie, which took me to the geekblogger site, and there was a very helpful comment posted by Iain Murdock. I followed Iain's advice and it worked fine after that.
Hi, I have not been able to log in to SL for a while. Whenever I try to start the SL viewer, it gets to the stage of saying "Initializing VFS" and then goes no further. Can anyone provide assistance? Thanks. Cally.