[R-es] problema con ggplot2

[Manuel Mendoza]

Hace tiempo que utilizo ggplot2, pero después de haber instalado  
varios paquetes nuevos, al cargarlo (library(ggplot2)) me da este error:

Error: package or namespace load failed for ‘ggplot2’ in  
loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck =  
vI[[j]]):
  namespace ‘pkgconfig’ 2.0.1 is being loaded, but >= 2.0.2 is required
-- 
Dr Manuel Mendoza
Department of Biogeography and Global Change
National Museum of Natural Science (MNCN)
Spanish Scientific Council (CSIC)
C/ Serrano 115bis, 28006 MADRID
Spain