An odd error occured to me today, after
returned error: Error in library(igraph) : there is no package called igraph
Checked library location for my R (it is, by the way, C:\Program Files\R\R-3.2.5\library) and igraph was indeed not there! The package was downloaded thougth, as my log contained:
The downloaded binary packages are in C:\Users\iladan\AppData\Local\Temp\Rtmp63c5us\downloaded_packages
And yes, indeed, igraph_1.0.1.zip was there.
Well, if it doesn't want to play by the book, - simply extract the archive into library folder and problem solved.