[R-SIG-Mac] HELP

[Yonabeth Nava de Escalante]

I am trying to install the ‘rms’ package in my Mac OS X Yosemite 10.10.5. When I try to load the library I get this error:

> library(rms)
Error in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]) : 
  there is no package called ‘mvtnorm’
Error: package or namespace load failed for ‘rms’

I tried installing the dependencies with 

install.packages("rms",dependencies = TRUE)

I also tried

install.packages("rms", repos=c("http://rstudio.org/_packages", "http://cran.rstudio.com”))

However, I keep getting the same error. 
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