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...o water quality analyses and have been writing software to call Sweave via Rscript eg: cmd> Rscript -e Sweave('sweavefile.Rnw') One problem we have been having is that Sweave tries to write temporary files in a temporary directory given by the tempdir() command (as per an email from F. Leitsch appended below). This is where our problem seems to lie. As a simplified example, if we call cmd> Rscript -e tempdir() from our web service we get a win32(Cannot read memory:0x00000037) error message unless we grant Read+Write permissions to the root directory, which we are trying to avoid d...