library(SMRD) Error in library(SMRD) : ‘SMRD’ is not a valid installed package

...I am trying to install SMRD from

but I am getting error.
last time I was able to install but recently I updated my pc with new windows and a new version of R and R studio. After that, I am not able to run this package.

Kindly help.

Can you be more specific? Please post the complete message you get when running this commands.

if (packageVersion("devtools") < 1.6) {


ERROR: failed to lock directory 'C:/Users/nirbh/OneDrive/Documents/R/win-library/4.0' for modifying
Try removing 'C:/Users/nirbh/OneDrive/Documents/R/win-library/4.0/00LOCK-backports'
Error: Failed to install 'SMRD' from GitHub:
(converted from warning) installation of package ‘backports’ had non-zero exit status

Downloading GitHub repo Auburngrads/SMRD@HEAD
These packages have more recent versions available.
It is recommended to update all of them.
Which would you like to update?

1: All
2: CRAN packages only
3: None
4: backports (1.1.9 -> 1.1.10) [CRAN]

It give error, if i chose any of the option.
``Downloading GitHub repo Auburngrads/SMRD@HEAD
Installing 1 packages: backports
Installing package into ‘C:/Users/nirbh/OneDrive/Documents/R/win-library/4.0’
(as ‘lib’ is unspecified)

There is a binary version available but the source version is later:
binary source needs_compilation
backports 1.1.9 1.1.10 TRUE

trying URL ''
Content type 'application/zip' length 87510 bytes (85 KB)
downloaded 85 KB

package ‘backports’ successfully unpacked and MD5 sums checked
Error: Failed to install 'SMRD' from GitHub:
(converted from warning) cannot remove prior installation of package ‘backports’``

problem resolved, need to install RBuildtool, and reinstall backports package in my case.


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