Cant install psych package

Question

I am new to R-studio and I am trying to install the psych package but I get the following error:

> Error: package or namespace load failed for ‘psych’ in loadNamespace(j
> <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):  there
> is no package called ‘mnormt’

So then I tried to install the mnormt package and I get the following message:

> package ‘mnormt’ successfully unpacked and MD5 sums checked Warning in
> install.packages :   cannot remove prior installation of package
> ‘mnormt’ Warning in install.packages :   restored ‘mnormt’

But when I then try to install the psych package it keeps saying that the mnormt package was not installed.

Answer 1

Another option would be first to deinstall the defect package and afterwards run a fresh install:

remove.packages("mnormt")

Reinstall mnormt with:

install.packages("mnormt")

Then install psych package:

install.packages("psych")

Could have happened some files were transferred incompletely/broken after your first installation of mnormt.

Answer 2

Sometimes this happens as one of the packages (that the package you are trying to install depends upon) is not installing properly.

First, try to

install.packages("mnormt")

Then try to install the psych package again as usual

install.packages("psych")