Rcmdr loading issue

Hi, 

I have a issue loading Rcmdr today. It is very strange, as I could get it to work last week on the same computer. 
I have tried restarting the computer, and re-installing R and XQuartz, but nothing changes. 

This is what I get: 





sessionInfo() 


R version 3.2.4 (2016-03-10) 
Platform: x86_64-apple-darwin13.4.0 (64-bit) 
Running under: OS X 10.11.4 (El Capitan) 

locale: 
[1] fr_FR.UTF-8/fr_FR.UTF-8/fr_FR.UTF-8/C/fr_FR.UTF-8/fr_FR.UTF-8 

attached base packages: 
[1] stats graphics grDevices utils datasets methods base 

BQ_BEGIN
library(Rcmdr) 

BQ_END
Le chargement a n?cessit? le package : splines 
Le chargement a n?cessit? le package : RcmdrMisc 
Le chargement a n?cessit? le package : car 
Le chargement a n?cessit? le package : sandwich 
Error : .onAttach a ?chou? dans attachNamespace() pour 'Rcmdr', d?tails : 
appel : structure(.External(.C_dotTclObjv, objv), class = "tclObj") 
erreur : [tcl] invalid command name "image". 

De plus : Warning message: 
In fun(libname, pkgname) : couldn't connect to display ":0" 
Erreur : le chargement du package ou de l'espace de noms a ?chou? pour ?Rcmdr' 



Would you have a idea of what could be wrong ? 

Many thanks in advance, 
Louise