Dear Shaquanda, > I am installing SPM5 on a new machine. Does a 'clean' instillation > (i.e.most recent version) require the updates to be added to the > directory? Yes. Unpack the original distribution <spm5.tar.gz>, and then unpack the updates <Updates_xxxx.tar.gz> on top of it so that the newer files overwrite the old ones. > Why are updates not included in the most recent release? We will probably change that for SPM8. All the best, Guillaume. -- Guillaume Flandin, PhD Wellcome Trust Centre for Neuroimaging University College London 12 Queen Square London WC1N 3BG