Thank you!!
I got the same error with ROAuth
depending from Jeff Gentry’s twitteR
. On the command cred$handshake()
(second to last page of http://cran.r-project.org/web/packages/twitteR/vignettes/twitteR.pdf) I replaced it with cred$handshake(ssl.verifypeer = FALSE)
(following your lead) and it appears to be working.