That may be the problem, yes. On 23 Apr 2013, at 12:47, Mahsa Shokouhi <[log in to unmask]> wrote: > Hi Steve > > Thanks very much for your prompt reply. > > All images are the same size: 2x2x2 mm3, matrix:91x109x91(similar to the MNI template). I should add that my OS is 32 bit Ubuntu, would you think this is the main issue? > > Thanks > Mahsa > --------------------------------------------------------------------------- Stephen M. Smith, Professor of Biomedical Engineering Associate Director, Oxford University FMRIB Centre FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK +44 (0) 1865 222726 (fax 222717) [log in to unmask] http://www.fmrib.ox.ac.uk/~steve ---------------------------------------------------------------------------