If that's true, then how come it did not give any error on windows? Thanks in advance. "ts" <decoux / moulon.inra.fr> wrote in message news:200306241116.h5OBGnp06718 / moulon.inra.fr... > >>>>> "U" == Useko Netsumi <REMOVE_THISusenets / nyc.rr.com> writes: > > U> Is this behaviour common? Or I did something wrong. > > No, the problem is in yaml which make reference to Kernel::Hash rather > than Object::Hash > > Guy Decoux > > > > >