Hi All, Before installing the Rgraphviz package successfully [e.g., source("http://bioconductor.org/biocLite.R"); biocLite("Rgraphviz")], (1) I downloaded graphviz-2.20.3.1.msi (also tried graphviz-2.26.3.msi) for MS Windows (XP) and installed it successfully and (2) I also installed the packages from bioconductor by: (Note: I use MS Windows XP and R 2.10.1 version) source("http://www.bioconductor.org/biocLite.R") biocLite() I got those error messages: "Error in inDL(x, as.logical(local), as.logical(now), ...) : unable to load shared library 'C:/PROGRA~1/R/R-210~1.1/library/Rgraphviz/libs/Rgraphviz.dll': LoadLibrary failure: The specified module could not be found." Obviously, it seems it is the package problem because it should go to 'C:/PROGRA~1/R/R-2.10.1/library/Rgraphviz/libs/Rgraphviz.dll' instead of 'C:/PROGRA~1/R/R-210~1.1/library/Rgraphviz/libs/Rgraphviz.dll' Thank you for the reply. Howard

Hi All, Sorry that it is unclear in the last email (see below), and I should say that: I got the following error messages when I loaded the package through library("Rgraphviz") or library(Rgraphviz): "Error in inDL(x, as.logical(local), as.logical(now), ...) : unable to load shared library 'C:/PROGRA~1/R/R-210~1.1/library/Rgraphviz/libs/Rgraphviz.dll': LoadLibrary failure: The specified module could not be found." Thanks, Howard On Tue Mar 30 16:21:38 EDT 2010, "HU,ZHENGJUN" <hhu at="" ufl.edu=""> wrote: > Hi All, > > Before installing the Rgraphviz package successfully [e.g., > source("http://bioconductor.org/biocLite.R"); > biocLite("Rgraphviz")], (1) I downloaded graphviz-2.20.3.1.msi > (also tried graphviz-2.26.3.msi) for MS Windows (XP) and > installed it successfully and (2) I also installed the packages > from bioconductor by: (Note: I use MS Windows XP and R 2.10.1 > version) > > source("http://www.bioconductor.org/biocLite.R") > biocLite() > > I got those error messages: > > "Error in inDL(x, as.logical(local), as.logical(now), ...) : > unable to load shared library > 'C:/PROGRA~1/R/R-210~1.1/library/Rgraphviz/libs/Rgraphviz.dll': > LoadLibrary failure: The specified module could not be found." > > Obviously, it seems it is the package problem because it should > go to > 'C:/PROGRA~1/R/R-2.10.1/library/Rgraphviz/libs/Rgraphviz.dll' > instead of > 'C:/PROGRA~1/R/R-210~1.1/library/Rgraphviz/libs/Rgraphviz.dll' > > Thank you for the reply. Howard