[R-es] Problemas con Rgraphviz

[Adriana Villa Murillo]

Hola a todos..!!

Necesito trabajar con el package classGraph, entiendo que dicho package requiere
como previo a Rgraphviz. Pues bien, al tratar de cargarlo aparece el siguiente
mensaje de error:

Error : .onLoad failed in loadNamespace() for 'Rgraphviz', details:
  call: value[[3L]](cond)
  error: unable to load shared object
'C:/ARCHIV~1/R/R-212~1.2/library/Rgraphviz/libs/i386/Rgraphviz.dll':
  LoadLibrary failure:  No se puede encontrar el módulo especificado.


  Check that (1) graphviz is installed on your system; (2) the
  installed version of graphviz matches '2.20.3'; this is the version
  used to build this Rgraphviz package; (3) graphviz is accessible to
  R, e.g., the path to the graphviz 'bin' directory is in the system
  'PATH' variable.  See additional instructions in the 'README' file of
  the Rgraphviz 'source' distribution, available at

  http://bioconductor.org/packages/release/bioc/html/Rgraphviz.html

  Ask further questions on the Bioconductor mailing list

  http://bioconductor.org/docs/mailList.html

Sabeis a que se refiere esto?

Asi mismo, si mirais el package classGraph, aparece como Depends e Imports los
mismos packages, sabeis porque?

De antemano gracias!!