i had already downloaded many packages from bioconductor...i reinstalled windows and before that copied the file containing those packages from C:\Users\mu\AppData\Local\Temp\RtmpSszekT\downloaded_packages
.....now, i opened R and from the install packeg (s) from local zip file option, loaded affy package, it sadid that:
package ‘affy’ successfully unpacked and MD5 sums checked
Error: package ‘BiocGenerics’ required by ‘affy’ could not be found
what can i do not have to redownload these packages again and use them please???