Hello,
I am trying to install OpenMx with the NPSOL-optimizer with R 4.0.0 using the source('https://openmx.ssri.psu.edu/software/getOpenMx.R')
-command (See here [6]). While the CRAN-version works fine, trying to install the NPSOL-version gives me the following error:
Warning in install.packages : unable to access index for repository https://openmx.ssri.psu.edu/software/bin/windows/contrib/4.0: kann URL 'https://openmx.ssri.psu.edu/software/bin/windows/contrib/4.0/PACKAGES' nicht öffnen Warning in install.packages : package ‘OpenMx’ is not available (as a binary package for R version 4.0.0)
The german code basically says that it cannot access the cited URL.
I am using R 4.0.0 with RStudio 1.3.959 under Windows 10 (64 bit). The command worked with an older version of R. But now I updated R and it does not work anymore.
Thank you!