error running introduction to MESH

When I start salome I get the following warning:

[paco@localhost salome]$ SetSignal( Standard_False ) is not implemented...

****************************************************************

* Warning: library Component cannot be found

* Module will not be available

****************************************************************

****************************************************************

* Warning: library PyCalculator cannot be found

* Module will not be available

****************************************************************

th. 3020073184 - Trace /dn22/SALOME/OCCtestE/KERNEL/Mandriva/KERNEL_SRC/src/NamingService/SALOME_NamingService.cxx [851] : Change_Directory() : FactoryServer (dir) not found

th. 3020073184 - Trace /dn22/SALOME/OCCtestE/SMESH/Mandriva/SMESH_SRC/src/SMESH_I/SMESH_Gen_i.cxx [241] : SMESH_Gen_i::SMESH_Gen_i : standard constructor

If I try to load the first script in the help

Introduction to MESH mod python interface I got the following error

[GCC 4.0.1 (4.0.1-2mdk for Mandriva Linux release 2006.0)] on linux2

type help to get general information on environment

>>> execfile("/home/paco/D-SALOME-EJE/primero.py"

Traceback (most recent call last):

File "", line 1, in ?

File "/home/paco/D-SALOME-EJE/primero.py", line 16, in ?

box = MakeBox(-cote, -cote, -cote, +cote, +cote, +cote)

NameError: name 'MakeBox' is not defined

I believe that that error is consequence from the first error.

Where I can change the search path for salome?

import smesh

# Geometry

# an assembly of a box, a cylinder and a truncated cone meshed with tetrahedral.

# Define values

name = "ex21_lamp"

cote = 60

section = 20

size = 200

radius_1 = 80

radius_2 = 40

height = 100

# Build a box

box = MakeBox(-cote, -cote, -cote, +cote, +cote, +cote)

# Build a cylinder

pt1 = MakeVertex(0, 0, cote/3)

di1 = MakeVectorDXDYDZ(0, 0, 1)

cyl = MakeCylinder(pt1, di1, section, size)

# Build a truncated cone

pt2 = MakeVertex(0, 0, size)

cone = MakeCone(pt2, di1, radius_1, radius_2, height)

# Fuse

box_cyl = MakeFuse(box, cyl)

piece = MakeFuse(box_cyl, cone)

# Add in study

addToStudy(piece, name)

# Create a group of faces

group = CreateGroup(piece, ShapeType["FACE"])

group_name = name + "_grp"

addToStudy(group, group_name)

group.SetName(group_name)

# Add faces in the group

faces = SubShapeAllIDs(piece, ShapeType["FACE"])

UnionIDs(group, faces)

# Create a mesh

# Define a mesh on a geometry

tetra = smesh.Mesh(piece, name)

# Define 1D hypothesis

algo1d = tetra.Segment()

algo1d.LocalLength(10)

# Define 2D hypothesis

algo2d = tetra.Triangle()