COMMAND NOT FOUND

[adavizehameed]

Hello,
I am new learner of geant4 GATE. I just started to follow the GATE users Guide V8.0. The PET example therein is what i am trying to replicate as a first time learner but got this error messages at the Fifth Stage of command:

#Fifth step: Setting-up the digitizer

/gate/digitizer/Singles/insert adder
/gate/digitizer/Singles/insert readout
/gate/digitizer/Singles/readout/setDepth 1

E N E R G Y B L U R R I N G

#/gate/digitizer/Singles/insert blurring
/gate/digitizer/Singles/blurring/setResolution 0.19
/gate/digitizer/Singles/blurring/setEnergyOfReference 511. keV

E N E R G Y W I N D O W

/gate/digitizer/Singles/insert thresholder
/gate/digitizer/Singles/thresholder/setThreshold 350. keV
/gate/digitizer/Singles/insert upholder
/gate/digitizer/Singles/upholder/setUphold 650. keV

ERROR MESSAGES

ERROR: G4VisCommandsViewerZoom::SetNewValue: no current viewer.
ERROR: G4VisCommandsViewerPan::SetNewValue: no current viewer.
ERROR: G4VisCommandsViewerZoom::SetNewValue: no current viewer.
ERROR: G4VisCommandsViewerPan::SetNewValue: no current viewer.
***** COMMAND NOT FOUND </gate/digitizer/Singles/insert adder> *****

***** Batch is interrupted!! *****

-------- WWWW ------- G4Exception-START -------- WWWW -------
*** G4Exception : UIMAN0123
issued by : G4UImanager::ApplyCommand
Command aborted (100)
Error code : 100
*** This is just a warning message. ***
-------- WWWW -------- G4Exception-END --------- WWWW -------

***** COMMAND NOT FOUND </control/execute mac/geometry.mac> *****

***** Batch is interrupted!! *****

-------- WWWW ------- G4Exception-START -------- WWWW -------
*** G4Exception : UIMAN0123
issued by : G4UImanager::ApplyCommand
Command aborted (100)
Error code : 100
*** This is just a warning message. ***
-------- WWWW -------- G4Exception-END --------- WWWW -------

[Core-0] End of macro mac/main.mac

Please help me out, the above command was written in geometry.mac file of the mac folder.
Thanks in anticipation

[VictorSanchz]

What version of Gate are you using? Because the definition of the digitizer have been modified in modern versions. You can check the documentation.