Thank you very much for your help. When I run using a t-test I do get the same error message. Here is the output from running the system check:

-------------------------------- general ---------------------------------
architecture: 64bit
system: Darwin
release: 16.7.0
version: Darwin Kernel Version 16.7.0: Thu Jun 15 17:36:27 PDT 2017; root:xnu-3789.70.16~2/RELEASE_X86_64
distribution: 10.12.6 x86_64
number of CPUs: 8
apparent login shell: tcsh
shell RC file: .cshrc (exists)

--------------------- AFNI and related program tests ---------------------
which afni : /Users/User1/abin/afni
afni version : Precompiled binary macosx_10.7_local: Nov 21 2017
: AFNI_17.3.04
AFNI_version.txt : AFNI_17.3.04, macosx_10.7_local, Nov 21 2017
which python : /usr/bin/python
python version : 2.7.10
which R : /usr/local/bin/R
R version : R version 3.4.1 (2017-06-30) -- "Single Candle"
which tcsh : /bin/tcsh

instances of various programs found in PATH:
afni : 1 (/Users/User1/abin/afni)
R : 1 (/Library/Frameworks/R.framework/Versions/3.4/Resources/bin/R)
python : 1 (/usr/bin/python)
python2 : 0
python3 : 0


testing ability to start various programs...
afni : success
suma : success
3dSkullStrip : success
uber_subject.py : success
3dAllineate : success
3dRSFC : success
SurfMesh : success
3dClustSim : success

checking for R packages...
rPkgsInstall -pkgs ALL -check : success

checking for $HOME files...
.afnirc : found
.sumarc : found
.afni/help/all_progs.COMP : found

------------------------------ python libs -------------------------------
** python module not found: PyQt4
-- PyQt4 is no longer needed for an AFNI bootcamp

python binaries under /sw/bin:
/sw/bin/python (sym link to /sw/bin/python2.7)

-------------------------------- env vars --------------------------------
PATH = /usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/Users/User1/abin

PYTHONPATH = /sw/lib/qt4-mac/lib/python2.7/site-packages

R_LIBS =
LD_LIBRARY_PATH =
DYLD_LIBRARY_PATH (sub-shell) = /opt/X11/lib/flat_namespace
DYLD_FALLBACK_LIBRARY_PATH (sub-shell) =

------------------------------ data checks -------------------------------
data dir : found AFNI_data6 under $HOME
top history: ... [rickr]: updated FT_white.nii w/out 16 (brain stem)
data dir : found AFNI_demos under $HOME
top history: ... [pault]: remove rank from FATCAT_DEMO, FAT_MVM_DEMO
data dir : found suma_demo under $HOME
top history: .../SUMA_data/Build_tmp on Wed Aug 20 10:04:23 EDT 2014
data dir : found afni_handouts under $HOME
atlas : found TT_N27+tlrc under /Users/User1/abin

------------------------------ OS specific -------------------------------

++ found 1 dylib files under '/opt/X11/lib/flat_namespace'
-- found 'libXt' dylib files:
/opt/X11/lib/flat_namespace/libXt.6.dylib
-- recent OS X, cheating to check DYLD_LIBRARY_PATH in cur shell 'tcsh'...
++ found evar DYLD_LIBRARY_PATH = /opt/X11/lib/flat_namespace

========================= summary, please fix: =========================
* consider installing fink