I am not certain, just looking at that, unfortunately.
I wonder if you have tried using the (much) newer dcm2niix_afni to convert the dicoms to nifti? That might help. Basically, try:
dcm2niix_afni -f [OUTPUT PREFIX] -o [OUTPUT LOCATION] [DIRECTORY HOLDING DICOMS]
or
dcm2niix_afni -f PREFIX_%p_%z -o [OUTPUT LOCATION] [DIRECTORY HOLDING DICOMS]
where, in the 2nd case, the [DIRECTORY HOLDING DICOMS] could hold several sets of dicoms, and the program will reconstruct each volume separately, sticking in the protocol and sequence name into the output nifti file name, for ease of recognition.
-pt