Hi - it most likely does sound like a RAM problem or maybe disk space - see the RAM FAQ on the FSL wiki Cheers. On 24 Jan 2013, at 18:20, Rali Dimitrova wrote: > Dear all > > I get the following error when running tbss_3 -S : > > creating valid mask and mean FA > /usr/local2/fsl/bin/tbss_3_postreg: line 183: 28206 Killed $FSLDIR/bin/fslmaths all_FA -max 0 -Tmin -bin mean_FA_mask -odt char > > All images have been registered to a specified template (-t). It shouldn`t be a memory problem (64bit machine, 12RAM) as all images have successfully been merged into a 4D file. I have preprocessed this data before (chunk-wise) using the same target and the same orig FA_maps. > > I ran out of ideas why the script would not create the mask and mean_FA so your help would be much appreciated! > > Thanks! > > Best wishes, > Rali > --------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------