Below is what I got when try to use affycoretools, I have tried to re-install both R and R studio.
Still, same situation. I also tried to use ubuntu to run R and Rstudio. Same problem.
Did I make any mistake when installing ?
>source("http://www.bioconductor.org/biocLite.R")
>biocLite("affy")
>biocLite("affycoretools")
>library(affy)
>library(affycoretools)
Warning message:
In namespaceImportMethods(ns, loadNamespace(j <- imp[[1L]], c(lib.loc, :
No generic function found corresponding to requested imported methods for "colnames<-" from package "annaffy" (malformed exports?)

Please provide the output of the
sessionInfo()command after loading affycoretools.Note that what you are seeing is a warning, and it may be that affycoretools did load; again,
sessionInfo()will tell us.