Hi - this exact command works for me on a fstat image I had lying around, using your degrees of freedom. I guess there's something wrong with your input image? If you can't track this down, feel free to upload the image for us to have a look. Cheers. On 5 Mar 2009, at 22:02, John Herrington wrote: > I am trying to convert an fstat map to a zstat map using the following > syntax, with the following output: > >> ftoz -zout zstat1 fstat1 1 14 > 902629 > Segmentation fault > > I got this same segmentation fault across a number of different > fstat files, > with a variety of degrees of freedom set. Can you identify anything > wrong > with the syntax I used? If not, any clue as to what the problem > might be? > I'm running FSL version 4.1.1 in CentOS 5 (output from uname -a is > below). > > Thanks - John > > 2.6.18-92.1.18.el5 #1 SMP Wed Nov 12 09:19:49 EST 2008 x86_64 x86_64 > x86_64 > GNU/Linux > --------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------