Hi, I'm not sure what this would be. Please cd to blah.feat, run fslerrorreport (as described in http://www.fmrib.ox.ac.uk/fslfaq/#general_reporting ) and send us the output. This should allow us to hopefully diagnose the problem. All the best, Mark On 19 Oct 2004, at 18:28, Jennifer Bramen wrote: > Hey Everyone, > > I am trying to use an roi mask with tsplot and I keep getting a bus > error. Anyone else have this > experience? > > This is how I have been uaing the command followed by the error > message. > > % tsplot <blah.feat> -m <maskfile>.hdr -o <outfile> > Bus error > > > Jen