Me encuentro con el siguiente error cuando intento usar ggplot2 y trazar dentro de la consola después de actualizar a Yosemite:

Error in (function (display = "", width, height, pointsize, gamma, bg,  : 
  X11 module cannot be loaded
In addition: Warning message:
In (function (display = "", width, height, pointsize, gamma, bg,  :
  unable to load shared object '/Library/Frameworks/R.framework/Resources/modules//R_X11.so':
  dlopen(/Library/Frameworks/R.framework/Resources/modules//R_X11.so, 6): Library not loaded: /usr/X11/lib/libSM.6.dylib
  Referenced from: /Library/Frameworks/R.framework/Resources/modules//R_X11.so
  Reason: image not found

¿Cómo puedo resolver esto?