+1

update: separately installed RStudio + R 3.4.1 works fine.

I get a similar error on a clean install of Anaconda 4.4.0 after doing conda install rpy2. This is on Mac OS Sierra, and the R version I get is 3.4.1. Specifically, when trying to install a package, I get an error:

> source("http://bioconductor.org/biocLite.R")

Error in file(filename, "r", encoding = encoding) : 
  internet routines cannot be loaded
In addition: Warning message:
In file(filename, "r", encoding = encoding) :
  unable to load shared object '/Users/sten/anaconda3/lib/R/modules//internet.so':
  dlopen(/Users/sten/anaconda3/lib/R/modules//internet.so, 6): Library not loaded: @rpath/libssh2.1.dylib
  Referenced from: /Users/sten/anaconda3/lib/R/modules//internet.so
  Reason: image not found

Note that @rpath has nothing to do with R, but is a mechanism for finding shared libraries on Mac OS X.

Checking under ~/anaconda3/lib indeed there is no libssh2.1.dylib. After doing

conda install libssh2

it still doesn't work, but now it wants to load another library (libgssapi_krb5.2.2.dylib) which we can get by installing krb5:

conda install krb5

...and this solves the problem! At least on my machine.

In short, it seems there are two dependencies missing from r-base.

Thanks @slinnarsson, I need to get this fixed ASAP.

This is open until I fix it properly.

Thanks，it solved my problem!!!

thanks @slinnarsson, solved for me.

thanks @slinnarsson, solved for me.

Thank you @slinnarsson! It solved the problem I've stuck for 2 days!

Hello,

I have tried to fix the internet routines problem as well by copying conda install krb5 into R studio and trying to run it. I revieved the fallowing error messages

Error: unexpected symbol in "conda install"
Error: unexpected symbol in "conda install.packages"

I have macOS Sierra 10.12.4, Anaconda Navigator 1.6.2, and R Studio version 3.4.1

Ultimately I am trying to install caTools but I get the faloowing error message

caTools’ is not available (for R version 3.4.1)

All my packages are up to date.

@StealthNameless you need to run the conda comman in your terminal, not inside R studio.

@slinnarsson You are a hero.

Thank you @slinnarsson, your solution worked for me.

black magic, but it works!

When running conda install libssh2, Conda wants to downgrade my Python package to 3.5.4 from 3.6. Which I don't want.

@mingwandroid It works. You're the wind in my sails today. ⛵️

This is fixed properly now. Make sure you are using the latest conda then conda update r-essentials rstudio.

@slinnarsson Thanks! Solved for me!

the above suggestions can not solve my problem.
however, I fix it through
cd ~/anaconda3/lib(your anaconda3 lib PATH)
rstudio

If you are using RStudio Server, you might need to start it with the --rsession-ld-library-path=/opt/conda/lib command line argument.

This is because RStudio ignores the servers LD_LIBRARY_PATH when starting R sessions.