[Gate-users] Questions about the example in the users guide

[Victor Cheung]

Dear All,

I am a newbie and I am using Gate v6.1 with Geant4 9.4.p02. I am trying to
follow the example listed in
http://wiki.opengatecollaboration.org/index.php/Users_Guide_V6.1:Getting_started

When I input "/gate/systems/cylindricalPET/module/attach box2 vglue 0.2cm",
it shows:
==================
[G4-cerr] [GateSystemComponentMessenger]:
[G4-cerr] could not find a volume creator for the name 'box2 vglue 0.2cm'
[G4-cerr] Attachment request will be ignored!
==================

When I input "/gate/source/twogamma/gps/confine NULL", it shows:
==================
[G4]  **** Error: Volume does not exist ****
[G4]  Ignoring confine condition
==================

Referring to
http://wiki.opengatecollaboration.org/index.php/Users_Guide_V6.1:Defining_a_geometry,
when I input "/gate/world/describe", it shows:
==================
Nb of moves:       1

GATE object:        'world/placement'
Is enabled?         Yes
Move type:     placement
Translation:       0 0 0 fm
Rotation axis:     (0,0,0)
Rotation angle:    0 deg

Nb of repeaters:       0
==================
rather than the messages listed in the users guide.

Also, the command "/gate/world/daughters/info" shows nothing.

In addition, the warning :
==================
G4PhysicalVolumeModel::Validate() called.
  Volume of the same name and copy number ("world_phys", copy 0) still
exists and is being used.
  WARNING: This does not necessarily guarantee it's the same
  volume you originally specified in /vis/scene/add/.
==================
appears again and again.

is it normal?

Thanks
Victor