Hi Veena,
Those warnings do not look important to me. Indeed, you do not
have the anatomical parents of those datasets (the +orig files).
You are probably seeing that message because you are runnning
'afni' from your home directory, but you don't have any AFNI
datasets there. So afni searches for any just below it, finds
some datasets in your 'abin' directory, loads them, and complains.
If you run afni from some directory where you have your datasets,
I expect that you will not see the warnings.
- rick