Problem when running exgps example

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Argument Default value Alternative Comment

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2	1	All		text for level 1 only / text for All postings

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2 3 2 3 levels / 2 levels

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1	2	1	2 levels / 1 level (original posting)
2	3	2	3 levels / 2 levels
3	3	All	3 levels / all levels (all postings)

Hello,

I tried to run the example of GPS provided in: examples/extended/eventgenerator/exgps

I follow the insructions given in the readme file and I get some error messages, see below:
Idle> control/execute macros/display.mac
Got standard cmap
Window name: viewer-0 (OpenGLImmediateX)
G4Scene::AddWorldIfEmpty: The scene was empty of run-duration models.
  "world" has been added.
***** COMMAND NOT FOUND </vis/viewer/viewpointThetaPhi 30 30> *****

***** Batch is interupted!! *****
Idle> /vis/viewer/set/viewpointThetaPhi 30 30
Idle> /vis/scene/endOfEventAction accumulate
WARNING: The vis manager will keep up to 100 events.
  This may use a lot of memory.
Idle> /tracking/storeTrajectory 1
Idle> run/beamOn 10
### Run 0 start.
Columns : syntax error
BatchLab::BaseTuple::booking : Bad syntax in "std::string Pname, std::double Energy, X, Y, Z, Theta, Phi, Weight".

---> Begin of event: 0

BatchLab::MemoryTuple::fill(string) : column 0 not found.
BatchLab::MemoryTuple::fill(double) : column 1 not found.
BatchLab::MemoryTuple::fill(double) : column 2 not found.
BatchLab::MemoryTuple::fill(double) : column 3 not found.
BatchLab::MemoryTuple::fill(double) : column 4 not found.
BatchLab::MemoryTuple::fill(double) : column 5 not found.
BatchLab::MemoryTuple::fill(double) : column 6 not found.
BatchLab::MemoryTuple::fill(double) : column 7 not found.

G4VisManager: Using G4TrajectoryDrawByCharge as default trajectory model. See commands in /vis/modeling/trajectories/ for other options.

BatchLab::MemoryTuple::fill(string) : column 0 not found.
BatchLab::MemoryTuple::fill(double) : column 1 not found.
BatchLab::MemoryTuple::fill(double) : column 2 not found.

Some outfiles are nevertheless generated. When I try to read them, I also get some error messages, see below:
>jas3 exgps.aida
java.io.IOException: Error reading /home/local1/geant4/work/exgps/exgps.aida
    at hep.aida.ref.xml.AidaXMLStore.read(AidaXMLStore.java:148)
    at hep.aida.ref.tree.Tree.init(Tree.java:1035)
    at hep.aida.ref.tree.TreeFactory.createTree(TreeFactory.java:183)
    at org.freehep.jas.extension.aida.AIDAPlugin$JAS3TreeFactory.createTree(AIDAPlugin.java:284)
    at hep.aida.ref.tree.TreeFactory.create(TreeFactory.java:115)
    at org.freehep.jas.extension.aida.AIDAPlugin.openFile(AIDAPlugin.java:113)
    at org.freehep.jas.extension.aida.AIDAPlugin.openFile(AIDAPlugin.java:108)
    at org.freehep.jas.plugin.basic.FileOpener.openFile(FileOpener.java:124)
    at org.freehep.jas.plugin.basic.FileOpener.handleEvent(FileOpener.java:89)
    at org.freehep.application.studio.EventSender.broadcast(EventSender.java:30)
    at org.freehep.application.studio.Studio.fireInitializationComplete(Studio.java:347)
    at org.freehep.application.Application.createFrame(Application.java:708)
    at org.freehep.jas.JAS3.main(JAS3.java:209)

With onxlab, I manage to see histograms with the expected titles, but they seem empty.

Thanks a lot for any suggestion and help.

Best regards.