[Gate-users] error reading particle type

[tony youness]

Dear GATE users,

I'm running gate for external radiotherapy applications for high energy 
photon beams. I recently tried to create a new IAEAphsp file after the 
jaws of a simulated Linac in order to reduce computation time. When I 
try to run a new simulation with the created phase space file, I get the 
following error multiple times at the end of each simulation:

ERROR: read_particle: Failed to read particle type

  ERROR: read_particle: Failed to read particle type

  ERROR: read_particle: Failed to read particle type

...


As i understand that a photon ID is represented by the number 1. When I 
tried to read the IAEAphsp file, which contains ID, energy, position and 
direction of each particle, i recognized that some particles have the ID 
-1. In the header file the -1 and 1 are considered as a photon as I 
realized. I can't find why I'm getting the negative sign and I'm not 
sure if the error is related to the sign, has anyone encountered this 
problem before?

I would really appreciate any help or advise,

Best Regards,

Tony