I have installed QGIS on Mac, using Homebrew:
brew install qgis2 --with-r
from osgeo/osgeo4mac. I did not want Grass ( although I have laso tried --with-grass . In the processing toolbox, I went to activate the rscripts. So far so goo, but when hitting ok, QGIS complains that the path to Grass 6.4 is not found ( not sure why it does that). I cannot activate my R. ANy hints how to go about this? There is no option to delete the grass integration, and despite not activating grass, this complains.