我使用多个软件包的脚本工作正常，直到上周五。我做了更新或所有包（我使用RStudio），现在我可以打开一些包。
有关plyr和dplyr的示例。
我有设置：
.libPaths()
[1] "C:/Users/florent/Documents/R/win-library/3.3" "C:/Program Files/R/R-3.3.1/library"
When I do
install.packages("plyr")
library("plyr")
我明白了：
Installing package into ‘C:/Users/florent/Documents/R/win-library/3.3’
(as ‘lib’ is unspecified)
also installing the dependency ‘Rcpp’
trying URL 'https://cran.rstudio.com/bin/windows/contrib/3.3/Rcpp_0.12.7.zip'
Content type 'application/zip' length 3265128 bytes (3.1 MB)
downloaded 3.1 MB
trying URL 'https://cran.rstudio.com/bin/windows/contrib/3.3/plyr_1.8.4.zip'
Content type 'application/zip' length 1183174 bytes (1.1 MB)
downloaded 1.1 MB
package ‘Rcpp’ successfully unpacked and MD5 sums checked
Warning in install.packages :
cannot remove prior installation of package ‘Rcpp’
package ‘plyr’ successfully unpacked and MD5 sums checked
Warning in install.packages :
cannot remove prior installation of package ‘plyr’
The downloaded binary packages are in
C:\Users\florent\AppData\Local\Temp\3\RtmpiWaBed\downloaded_packages
> library("plyr")
Error in library("plyr") : there is no package called ‘plyr’
然后我给出了安装软件包的目录，我尝试再次打开它：
install.packages("plyr", lib="C:/Users/florent/Documents/R/win-library/3.3")
library("plyr", lib.loc="C:/Users/florent/Documents/R/win-library/3.3")
我有：
> install.packages("plyr", lib="C:/Users/florent/Documents/R/win-library/3.3")
also installing the dependency ‘Rcpp’
trying URL 'https://cran.rstudio.com/bin/windows/contrib/3.3/Rcpp_0.12.7.zip'
Content type 'application/zip' length 3265128 bytes (3.1 MB)
downloaded 3.1 MB
trying URL 'https://cran.rstudio.com/bin/windows/contrib/3.3/plyr_1.8.4.zip'
Content type 'application/zip' length 1183174 bytes (1.1 MB)
downloaded 1.1 MB
package ‘Rcpp’ successfully unpacked and MD5 sums checked
Warning in install.packages :
cannot remove prior installation of package ‘Rcpp’
package ‘plyr’ successfully unpacked and MD5 sums checked
Warning in install.packages :
cannot remove prior installation of package ‘plyr’
The downloaded binary packages are in
C:\Users\florent\AppData\Local\Temp\3\RtmpiWaBed\downloaded_packages
> library("plyr", lib.loc="C:/Users/florent/Documents/R/win-library/3.3")
Error in library("plyr", lib.loc = "C:/Users/florent/Documents/R/win-library/3.3") :
there is no package called ‘plyr’
>
这很奇怪。我失去了为什么我不能得到这两个包，但我可以得到所有其他包！
欢迎提出建议！