The most likely explanation is you have a new version of dplyr/tibble and an old version of rlang. Try re-installing rlang.
Hadley On Mon, Aug 14, 2017 at 9:26 AM, Szumiloski, John <john.szumilo...@bms.com> wrote: > UseRs, > > When doing some data manipulations using the tidyverse, I am repeatedly > getting the same error message in now three separate situations. I can write > up a reproducible example, but want to lay out the high-level issues in case > someone recognizes exactly what is happening here. > > The error is: > > Error in mut_env_parent(overscope$.top_env, lexical_env) : > object 'rlang_mut_env_parent' not found > > and it occurs in three situations: > > > 1) Using tidyr::nest() on an output from dplyr::group_by() > > 2) Using tibble::tibble() with <name> = <value> arguments > > 3) Using dplyr::select() on a tibble to select two columns > > Any obvious clues as to what's happening here? The only non-base packages > loaded are current tidyverse, forcats, magrittr, readxl and stringr. > > Thanks, > John > John Szumiloski, Ph.D. > Principal Scientist, Statistician > Pharmaceutical Development / Drug Product Science & Technology > NBR105-1-1411 > > Bristol-Myers Squibb > P.O. Box 191 > 1 Squibb Drive > New Brunswick, NJ > 08903-0191 > > (732) 227-7167 > > > ________________________________ > This message (including any attachments) may contain c...{{dropped:14}} ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.