Hi,
I have installed XQuartz, turn off and on the computer, then installed the R cran for my MAC os Catalina 10.15.4 from Cran r project, finally I dowloaded R and I can't open it! It acts as it was opened because it jumps and says "The app is not working" and force me to "close it" 
HALP, I need it for my statistics class at TUM.
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