Cannot install devtools package after upgrading R

Question

I have just upgraded to R 3.2.1, and can no longer install the devtools package.

I get the following output:

install.packages(\'devtools\')
         


        

Answer 1

The error message says:

there is no package called ‘curl’

Run:

install.packages(c('devtools','curl'))

Then try library('devtools')

If any other error persists, then update your post.