Can't install

[Andreas-Bio]

> install.packages("RMySQL", type="source")
Installing package into ‘C:/Users/gf1954/Documents/R/win-library/3.4’
(as ‘lib’ is unspecified)
trying URL 'https://cran.rstudio.com/src/contrib/RMySQL_0.10.15.tar.gz'
Content type 'application/x-gzip' length 52728 bytes (51 KB)
downloaded 51 KB

* installing *source* package 'RMySQL' ...
** Paket 'RMySQL' erfolgreich entpackt und MD5 Summen überprüft
Warnung: Ausführung von Kommando 'sh ./configure.win' ergab Status 127
ERROR: configuration failed for package 'RMySQL'
* removing 'C:/Users/gf1954/Documents/R/win-library/3.4/RMySQL'
In R CMD INSTALL
Warning in install.packages :
  running command '"C:/PROGRA~1/R/R-34~1.3/bin/x64/R" CMD INSTALL -l "C:\Users\gf1954\Documents\R\win-library\3.4" C:\Users\gf1954\AppData\Local\Temp\Rtmp63KumC/downloaded_packages/RMySQL_0.10.15.tar.gz' had status 1
Warning in install.packages :
  installation of package ‘RMySQL’ had non-zero exit status

I opened the .tar.gz and the configure.win file is 0 bytes??
I have cygwin installed and I can type "sh" in the console, it is a recognized command.