I have just installed R 2.4.0 (Windows XP OS) and have tried to run code that had worked with previous versions of R. However, I now get an error message: Error in La.svd(iCmat, method = "dgesvd") : unused argument(s) (method = "dgesvd") The R NEWS page about the release and issue 6/4 of the newsletter states: La.svd(method = "dgesvd") is defunct. As a beginner I'm not sure what this means. Does 'defunct' mean it will no longer work? Has it been replaced with something else? Many thanks. Steve Ramm University of Liverpool, UK