BUG:  Adjustment for no affine file.
BUG:  Adjustment for no affine file.

dawnsong/ANTs,fbudin69500/ANTs,stnava/ANTs,stnava/ANTs,dawnsong/ANTs,fbudin69500/ANTs,fbudin69500/ANTs,stnava/ANTs,stnava/ANTs,dawnsong/ANTs,dawnsong/ANTs,dawnsong/ANTs,fbudin69500/ANTs,stnava/ANTs,fbudin69500/ANTs,dawnsong/ANTs,stnava/ANTs,fbudin69500/ANTs,dawnsong/ANTs,fbudin69500/ANTs,stnava/ANTs