R Version 3.2.1 devtools Package Installation -

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i new r , have tried follow tutorial install devtools package. seems install package (as can seen below), when try load library(devtools), receive following error: 

"error in loadnamespace(j <- i[[1l]], c(lib.loc, .libpaths()), versioncheck = vi[[j]]) :    there no package called ‘rversions’ error: package or namespace load failed ‘devtools’"

i have tried remove in re-install, error keeps occurring.

> install.packages("devtools", dependencies=true) warning in install.packages :   dependencies ‘rcurl’, ‘whisker’, ‘rstudioapi’, ‘roxygen2’, ‘rversions’, ‘testthat’, ‘biocinstaller’, ‘rcpp’, ‘rmarkdown’, ‘lintr (>= 0.2.1)’ not available installing dependency ‘git2r’  trying url   'https://cran.rstudio.com/bin/windows/contrib/3.2/git2r_0.10.1.zip' content type 'application/zip' length 1554276 bytes (1.5 mb) downloaded 1.5 mb  trying url 'https://cran.rstudio.com/bin/windows/contrib/3.2/devtools_1.8.0.zip' content type 'application/zip' length 339098 bytes (331 kb) downloaded 331 kb  package ‘git2r’ unpacked , md5 sums checked package ‘devtools’ unpacked , md5 sums checked  downloaded binary packages in     c:\users\ilan\appdata\local\temp\rtmpouw87n\downloaded_packages > library(devtools) error in loadnamespace(j <- i[[1l]], c(lib.loc, .libpaths()), versioncheck = vi[[j]]) :    there no package called ‘rversions’ error: package or namespace load failed ‘devtools’


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