fBasics: error with stableFit, cannot find PhiStable

Hi,

I begin with R and and I would like to use the stableFit function of 
the fBasics package. But when I compute this function, I have the 
following error message :

Erreur dans .qStableFit(x, doplot, title, description) : 
        objet ".PhiStable" non trouv?
De plus : Warning message:
data set 'PhiStable' not found in: data(PhiStable)

Any solutions or advice are welcome.
Thanks

Emmanuel Leclercq