I just recently switched to fsl4 and am having some problems (using 4.1.1). I ran a group of 25 subjects, all in the same feat batch with the exact same parameters. I then re-ran registration-only on all of the same subjects, registering them to the same common brain. Now I'm trying to run a group analysis of the same subjects. It starts off fine, but then I get this error:
/space/raid/fmri/fsl-4.1.1-centos4_64/bin/fslmaths varcope1 -mas mask varcope1
Error - not all input FEAT directories have valid and compatible design.con contrast files.
The problem is, I can't figure out what the problem is. All subjects were run together, and I checked with diff and there was no difference between any of their design.con files. Is there some other way to arrive at this error? I tried checking permissions, none of the files are zipped, I just created all this morning in the same version of fsl I'm using for the group, and I'm not sure where else to look. Is it possible that fsl4 can't run group analyses if registration-only has been run after the initial contrasts were run? Any pointers to where I can look would be much appreciated!
thanks,
Katie
_________________________________________
Katie Karlsgodt, Ph.D.
Post Doctoral Fellow, Neurogenetics Affinity Group
Semel Institute
University of California, Los Angeles
phone: 310-794-9673
fax: 310-794-9740
