Help about geant4-dna (pdb4dna)

Dear Geant Experts/Researchers,

I am learning to work with geant4-dna simulation. I want to study the radiation interaction with DNA and cells. For that purpose, I am using “.pdb” files as detectors. The files “1aoi.pdb” and “1ZBB.pdb” are loaded correctly in GUI mode. However, when I input “2kap.pdb” file it yields the following error.

********************************************** Error *************************

Number of undifined atoms =0

-------- EEEE ------- G4Exception-START -------- EEEE -------
*** G4Exception : GeomSolids0002
issued by : G4Box::G4Box()
Dimensions too small for Solid: Bounding!
hX, hY, hZ = -inf, -inf, -inf
*** Fatal Exception *** core dump ***
**** Track information is not available at this moment
**** Step information is not available at this moment

-------- EEEE -------- G4Exception-END --------- EEEE -------

*** G4Exception: Aborting execution ***

******************* Error ends here **********************************************

Kindly help me to resolve the issue.

Looking forward to hearing from you.

Best regards,

Jalaj Jain.