Image Attachment
The image attachment field contained in the post form (shown here)
is for images only. For example, see http://afni.nimh.nih.gov/afni/community/board/read.php?f=1&i=6349&t=6344
If you are interested in uploading data please see: http://afni.nimh.nih.gov/sscc/upload
Attaching Images and then previewing
Note that if you attach an image and then select "Preview" you will lose the attachment. Please preview first and then attach your image.