[Freesurfer] recon all error MRISread: could not open file

I am getting an error during the recon all step that I cannot figure out. It seems to occur in the stage where labels are being written as two label files are missing in the labels directory ( lh.entorhinal_exvivo.label and lh.entorhinal_exvivo.label ) and an error log message emerges in the labels directory which says:

MRISread(/neurospin/meg/meg_ rep/anat/freesurfer_segmentation/lh.EC_average/surf/lh.sphere.reg): could not open file

In the main directory,an rh.EC_average and lh.EC_average file appears with broken links...

Does anyone know what the problem might be be. Sorry for my ignorance. Many thanks, Diana Omigie