Whenever I ran slicesdir, the temporary 'grot?.png' files were not removed. I modified $FSLDIR/bin/slicesdir and removed the '-f' set option from the shebang line. "#!/bin/sh -f" disables filename generation (ie, globbing) so the 'grot?.png' files were never found ... so they could not be removed. After removing '-f', slicesdir now deletes the 'grot?.png' files. "#!/bin/csh -f" tells the shell to skip reading ~/.cshrc on startup. the '-f' option for sh does something very different. - bettyAnn