I am just starting with the latest version of R Studio. I needed to install OpenMX and received an error message that RTools is required to build packages. At the bottome it said OpenMX is not available for my version of R Studio.
So I went ahead and did install.packages("Rtools") only to get the same error message - (that I need RTools installed first in order to install RTools, and that RTools isn't available for my version for RStudio).
Any ideas of what to do?