Besides these non-unique IDs, several subject datasets are missing; that is there are subject IDs listed in the subjects.txt file but no corresponding dataset. This was noticed by Peggy Christidis here. Can you verify this?

missing files for subject sub58867
missing 1 subject sets from /Volumes/elrond/share/data/fcon_1000/alldata/3.0T/Cambridge_Whitfield-Gabrieli_subjects.txt
missing files for subject sub18698
missing 1 subject sets from /Volumes/elrond/share/data/fcon_1000/alldata/3.0T/Leipzig_subjects.txt
missing files for subject sub45138
missing files for subject sub75361
missing 2 subject sets from /Volumes/elrond/share/data/fcon_1000/alldata/3.0T/Taipei_a_subjects.txt