Hi List When using duplicateCorrelation in Limma running under Linux I am receiving the following error: > cor <- duplicateCorrelation(MA, design=design, ndups=2, weights=MA$weights) Error in La.svd(QtZ, nu = mq, nv = 0) : error code 1 from Lapack routine 'dgesdd' Interestingly, there are no problems when analysing the same dataset in Limma running under Windows indicating a problem with the Linux version/installation.... - any suggestions would be appreciated! Linux: > sessionInfo() Version 2.3.1 (2006-06-01) x86_64-unknown-linux-gnu attached base packages: [1] "methods" "stats" "graphics" "grDevices" "utils" "datasets" [7] "base" other attached packages: statmod limma "1.2.4" "2.7.10" > Windows: > sessionInfo() Version 2.3.1 (2006-06-01) i386-pc-mingw32 attached base packages: [1] "methods" "stats" "graphics" "grDevices" "utils" "datasets" [7] "base" other attached packages: statmod limma "1.2.4" "2.7.10" > Best regards Jakob Hedegaard Project scientist UNIVERSITY OF AARHUS Faculty of Agricultural Sciences Research Centre Foulum Dept. of Genetics and Biotechnology Blichers All? 20, P.O. BOX 50 DK-8830 Tjele