When presenting the 2012-09 Diffusion Release we encountered some problems with people trying to import different kinds of data.
It would be great if the diffusion module documentation included a page dealing with this kind of thing...
e.g.
If you have a fsl.nii diffusion file you have to rename it to foo.fsl and the corresponding bvecs and bvals files to foo.fslbvecs and foo.fslbvals etc.