Thanks for the details, Philpp.
Indeed, there seem to be 16 runs of data in that directory (note the 'run' column), and Dimon is set up to process just one run at a time.
You can partition the runs using @move.to.series.dirs (to copy the files, move them, or with the first example, just test to see what it would do):
@move.to.series.dirs -test *.IMA
@move.to.series.dirs -action copy *.IMA
@move.to.series.dirs -action move *.IMA
Note that dcm2niix_afni can deal with multiple runs at once, as an alternative.
- rick