Linda Wrote:
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> My Afni version is linux_gcc33_64.

That's not really afni's version - but actually afni's version system is kinda weird anyway. On two different systems I get

$ afni -version
Version AFNI_2011_12_21_1014
[[Precompiled binary macosx_10.7_Intel_64: Mar 4 2014]]

and an older one

afni -version
Version AFNI_2011_12_21_1014
[[Precompiled binary linux_openmp_64: Nov 6 2012]]

in other words the 'version' remains the same but the compile date is different. here the older version does not support '-GIFTI' but the newer does. Hence, the compile date is probably most informative to see how 'old' your afni is.

> My system is
> ubuntu 11.10. So Could you please tell which
> version will be better for me?

I don't know how ubuntu's packaging system interferes with AFNI's updating system.

You could try just downloading the afni package to another place (e.g. ~/bin) and add that directory in the beginning of the PATH environmental variable. That way you would have two AFNI's; by updating the PATH variable you can use the more recent one.