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Question Re: datasets not found when running basic examples 

Forum: Installation and Configuration
Re: Question datasets not found when running basic examples (Claudio)
Date: 21 Mar, 2014
From: Ben Morgan <Ben Morgan>

On Thu, 20 Mar 2014 06:48:52 GMT, Claudio wrote:
> Hi, I have successfully installed Geant4 and after that I also
> downloaded the datafiles. Nevertheless when I try to build and install
> the example B1 (or other basic examples) I obtain the following error
> message.
> 
> *************************************************************
>  Geant4 version Name: geant4-10-00-patch-01    (28-February-2014)
>                       Copyright : Geant4 Collaboration
>                       Reference : NIM A 506 (2003), 250-303
>                             WWW : http://cern.ch/geant4
> *************************************************************
> 
> -------- EEEE ------- G4Exception-START -------- EEEE -------
> *** G4Exception : PhysicsLists002
>       issued by : G4DataQuestionaire
> 
> Low energy electromagnetic data are needed. This is a NEW requirement
> for standard EM physics since geant4 9.5. Please set the environmental
> variable G4LEDATA to point to your G4EMLOW directory. Note: EMLOW6.23 or
> above is needed for Bremsstrahlung data. Data are available from the
> Geant4 download page.
> 
> Photon-evaporation data are needed. Please set the environmental
> variable G4LEVELGAMMADATA to point to your PhotonEvaporation directory.
> Data are available from the Geant4 download page.
> 
> G4NEUTRONXS are needed. Please set the environmental variable
> G4NEUTRONXSDATA to point to your G4NEUTRONXS directory. Data are
> available from the Geant4 download page.
> 
> *** Fatal error: Missing mandatory data for this simulation engine ***
> 
> *** Fatal Exception *** core dump *** -------- EEEE --------
> G4Exception-END --------- EEEE -------
> 
> *** G4Exception: Aborting execution *** Aborted (core dumped)
> 
> However the data and the environment variable seem to be set properly.
> Where could the problem be?
> 

Could you check that the requested environment variables are set in the session, and if so that these point to where you installed the data? If needed, please post further details of theose locations and what you see in your environment here.

Ben.

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