For some reason, the normalize to smooth is not working. Normalize files are fine, however, this error pops up.
ValueError: Smooth requires a value for input ‘in_files’. For a list of required inputs, see Smooth.help()
Though I have checked and it is connected the same way in this tutorial
http://nipype.readthedocs.io/en/latest/users/examples/fmri_spm.html
Thanks in advance!