ERROR: dependency 'scales' is not available for package 'ggbiplot'

[Alex91190]

Hey, I am trying to install ggbiplot on R x64 3.3.1 on windows 7 using the R command:
library(devtools)
install_github("vqv/ggbiplot")
Downloading GitHub repo vqv/ggbiplot@master
from URL https://api.github.com/repos/vqv/ggbiplot/zipball/master
Installing ggbiplot
Installing 1 package: scales
Installing package into ‘C:/Users/admin/Documents/R/win-library/3.3’
(as ‘lib’ is unspecified)
essai de l'URL 'https://cran.univ-paris1.fr/bin/windows/contrib/3.3/scales_0.4.1.zip'
Content type 'application/zip' length 670692 bytes (654 KB)
downloaded 654 KB

package ‘scales’ successfully unpacked and MD5 sums checked
Warning: cannot remove prior installation of package ‘scales’

The downloaded binary packages are in
C:\Users\admin\AppData\Local\Temp\RtmpQXIjyl\downloaded_packages
"C:/PROGRA1/R/R-331.1/bin/x64/R" --no-site-file --no-environ --no-save
--no-restore --quiet CMD INSTALL
"C:/Users/admin/AppData/Local/Temp/RtmpQXIjyl/devtools1b68206338e1/vqv-ggbiplot-7325e88"
--library="C:/Users/admin/Documents/R/win-library/3.3" --install-tests

ERROR: dependency 'scales' is not available for package 'ggbiplot'

• removing 'C:/Users/admin/Documents/R/win-library/3.3/ggbiplot'
  Erreur : Command failed (1)

I also tried
install_github("ggbiplot","vqv")

[ginolhac]

did you try to install/update scales on its own?