Hi Fernando,
$ h5ls DD0088/g1e10s1e11dm1e12_0088.cpu0000/Grid00000001 Density Dataset {128, 128, 128} Metal_Density Dataset {128, 128, 128} Temperature Dataset {128, 128, 128} TotalEnergy Dataset {128, 128, 128} x-velocity Dataset {128, 128, 128} y-velocity Dataset {128, 128, 128} z-velocity Dataset {128, 128, 128}
It looks like your dataset doesn't have particles. If you had particles, your output would look more like this:
Dark_Matter_Density Dataset {64, 64, 128} Density Dataset {64, 64, 128} GasEnergy Dataset {64, 64, 128} Temperature Dataset {64, 64, 128} TotalEnergy Dataset {64, 64, 128} creation_time Dataset {324823} dynamical_time Dataset {324823} metallicity_fraction Dataset {324823} particle_index Dataset {324823} particle_mass Dataset {324823} particle_position_x Dataset {324823} particle_position_y Dataset {324823} particle_position_z Dataset {324823} particle_type Dataset {324823} particle_velocity_x Dataset {324823} particle_velocity_y Dataset {324823} particle_velocity_z Dataset {324823} x-velocity Dataset {64, 64, 128} y-velocity Dataset {64, 64, 128} z-velocity Dataset {64, 64, 128}
If you intended on having particles in this simulation, and you cannot figure out what went wrong, perhaps you should email the enzo-users list and ask there.
Good luck!