I have been trying to load an image (the SPM single_subject.nii) into the render plugin in the most current version of AFNI, to do some simple activation rendering and I cannot get that image (or any other structural image for that matter, even when coverted to .head/.brik files) to load as the render underlay.

Strangely, AFNI will load the single_subject.nii file into the basic orthogonal views. Additionally, in the render underlay pulldown menu AFNI only displays the activation image (also a .nii file) and no other images in the directory. When i select the activation image as the underlay and expand the window to select the overlay, AFNI will now display all the remaining images (incl. the single_subject.nii) as being available.

Note: Perhaps this is obvious, but all of these images were created in SPM (or via Marsbar), so I don't know if that is part of the problem. However, i had done this before with older versions of AFNI and never encountered this particular problem.

Any ideas?

Thanks,

Keith