Jeroen/Tomas, Thanks for the additional follow-ups. As shown in my original post, I am on macOS 10.12.6. I was using the command line version of R to get the error message I sent; I also get similar problems when running via GUI tools such as RStudio. I have co-workers who are only using macOS and they got similar crashes - though I'm not sure which version of macOS they are on.
Based on Gábor's recommendation I did quit using the default libcurl backend (default on my machine at least). Using download.file(url, path, method = curl) has been working great for my use case. Seth [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel