Don’t forget to reinstall XQuartz on Mac

After updating your mac to Yosemite, do not forget to reinstall XQuartz, which is required by tcltk package for R Commander. Otherwise, you will probably received some weird errors, like:

Error : .onLoad failed in loadNamespace() for 'tcltk', details:

For some details: http://socserv.socsci.mcmaster.ca/jfox/Misc/Rcmdr/installation-notes.html

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