r 3.5 Windows - devtools ‘rlang’ does not have a namespace

Having issues post install of devtools when loading as follows:

Error: package or namespace load failed for ‘devtools’:
package ‘rlang’ does not have a namespace

I am an R newbie, any help appreciated.

Welcome, @mcm220. Looks like you need to install the rlang package. Try running:


After you've installed rlang, you should be able to load and use devtools.

Many thanks for the help. In the end I had to re-install devtools and use the following code to see the enclosed packages:

> library(devtools)
> library(pkgbuild)

Thanks again for the help, much appreciated

If your question's been answered (even by you!), would you mind choosing a solution? It helps other people see which questions still need help, or find solutions if they have similar problems. Here’s how to do it:

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@andresrcs Sure no problem on the solution. For my issue regarding errors encountered using devtools in R 3.5 , by loading pkgbuild I was able to move forward. The error and simple resolution is below:

Error in find_rtools() : could not find function "find_rtools"
Attaching package: ‘pkgbuild’
The following object is masked from ‘package:devtools’:


[1] TRUE

Many thanks.

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