Please help me, I cannot install "MASS" package.
> library(MASS)
Error in library(MASS) : there is no package called ‘MASS’
I tried to install MASS package from local:
> utils:::menuInstallLocal()
package ‘MASS’ successfully unpacked and MD5 sums checked
Warning: cannot remove prior installation of package ‘MASS’
Even I cannot remove "MASS":
> remove.packages("MASS")
Removing package from ‘C:/Program Files/R/R-3.0.1/library’
(as ‘lib’ is unspecified)
Error in find.package(pkgs, lib) : there is no package called ‘MASS’
Also with this option I couldn't install package:
> options(install.lock=T)
> utils:::menuInstallLocal()
package ‘MASS’ successfully unpacked and MD5 sums checked
Warning: cannot remove prior installation of package ‘MASS’
Warning: restored ‘MASS’
Warning message:
In file.copy(savedcopy, lib, recursive = TRUE) :
problem copying C:\Program Files\R\R-3.0.1\library\00LOCK\MASS\libs\x64\MASS.dll to C:\Program Files\R\R-3.0.1\library\MASS\libs\x64\MASS.dll: Permission
And with install.packages:
> install.packages("C:\\MASS_7.3-35.zip",repos=NULL)
package ‘MASS’ successfully unpacked and MD5 sums checked
Warning: cannot remove prior installation of package ‘MASS’
Warning: restored ‘MASS’
Warning message:
In file.copy(savedcopy, lib, recursive = TRUE) :
problem copying C:\Program Files\R\R-3.0.1\library\00LOCK\MASS\libs\x64\MASS.dll to C:\Program Files\R\R-3.0.1\library\MASS\libs\x64\MASS.dll: Permission
I should mention I use R with ORE (Oracle R Enterprise).
There could be a few things happening here. Start by first figuring out your library location:
Sys.getenv("R_LIBS_USER")
or
.libPaths()
We already know yours from the info you gave: C:\Program Files\R\R-3.0.1\library
I believe you have a file in there called: 00LOCK. From ?install.packages:
Note that it is possible for the package installation to fail so badly that the lock directory is not removed: this inhibits any further installs to the library directory (or for --pkglock, of the package) until the lock directory is removed manually.
You need to delete that file. If you had the pacman package installed you could have simply used p_unlock() and the 00LOCK file is removed. You can't install pacman now until the 00LOCK file is removed.
To install pacman use:
install.packages("pacman")
There may be a second issue. This is where you somehow corrupted MASS. This can occur, in my experience, if you try to update a package while it is in use in another R session. I'm sure there's other ways to cause this as well. To solve this problem try:
Sys.getenv("R_LIBS_USER"). In your case this is: C:\Program Files\R\R-3.0.1\libraryMASS packageMASS via install.packages("MASS")If any of this works please let me know what worked.
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