Hi,
I have not faced the same problem but some of the problems that I faced in installing packages went away after I have closed RStudio and right clicked on RStudio from start menu and chose "Run as administrator.
Previously I was getting seemingly several random errors like "cannot connect". Downloading ZIP of the package and trying to install from there did not solve the problem.
So, until we receive a reply from someone who is experienced or can help with the specific situation,
- we may wish to try running as administrator to see if it helps.
- also we may wish to try the daily build to see if that resolves the problem. It is available from https://dailies.rstudio.com