Michelle Ferrill Wrote:
-------------------------------------------------------
> I'm getting the following error message shortly
> after starting afni, specifically the visualizer -
> haven't had any issues running scripts or on the
> command line.
> [...]
> ++ This version of AFNI was built Jan 11 2012 ++

You have a rather old version of afni. As a first step I would suggest to update it using "\@update.afni.binaries -d" (prefix with "sudo " if you need admin privileges).

> Fatal Signal 11 (SIGSEGV) received
> Bottom of Debug Stack

Do you have this problem when you start afni in another directory?
It might be the case that one of the files that AFNI sees is not as expected.

> kathleen@ka:/local/mri/experiments/Pronoun_Shboof/
> group_analysis/pct_signal_Apr2011_NP_offset$
> $PATH
> bash:
> /local/afni/bin:/usr/local/sbin:/usr/local/bin:/us
> r/sbin:/usr/bin:/sbin:/bin:/usr/games: No such
> file or directory

Just a small note: you're trying to execute whatever the contents is of $PATH.
The proper way to show the contents of $PATH is "echo $PATH".

best,
Nick