is there a bug in s.to.vect

is there a bug in s.to.vect???

I need some help to use s.to.vect or does it exist a new version ???

thank you for your help

DESCONNETS Jean-Christophe
Laboratoire d'Hydrologie
Centre ORSTOM
BP 5045
34032 Montpellier cedex 01
TEL : + 33 67 61 75 29
FAX : + 33 67 41 18 06
E-Mail : desconne@orstom.orstom.fr