I have simplified my structure and am still receiving the following error. I have checked all 4 listed impossibles. And can't come up with an explanation. Sorry to bother you with seemingly trivial questions, but this is the first we've used this program in our lab.

---

~~~~~~~~~~~~~~~~~~~ Model test failed! ~~~~~~~~~~~~~~~~~~~
Possible reasons:

1) Inappropriate model specification with options -model, -wsVars, or -qVars.
Note that within-subject or repeated-measures variables have to be declared
with -wsVars.

2) Misspecifications in general linear test coding with -gltCode.

3) Mistakes in data table. Check the data structure shown above, and verify
whether there are any inconsistencies.

4) Not enough number of subjects. This may happen when there are two or more
withi-subject factors. For example, a model with two within-subject factors with
m and n levels respectively requires more than (m-1)*(n-1) subjects to be able to
model the two-way interaction with the multivariate approach.


** Error:
Quitting due to model test failure...

---

This is the beginning of the script:


#! /bin/bash
3dMVM -prefix 3dMVM_GxAxC_test \
-model 'Group*Age' \
-wsVars 'Category' \
-jobs 8 \
-dataTable \
Subj Group Age Category InputFile \
1101 Control Kids USA 1101_faces_usa_cond1_CT_stats_REML_6+tlrc \
1102 Control Kids USA 1102_faces_usa_cond1_CT_stats_REML_6+tlrc \
1103 Control Kids USA 1103_faces_usa_cond1_CT_stats_REML_6+tlrc \
1104 Control Kids USA 1104_faces_usa_cond1_CT_stats_REML_6+tlrc \
1105 Control Kids USA 1105_faces_usa_cond1_CT_stats_REML_6+tlrc \
1106 Control Kids USA 1106_faces_usa_cond1_CT_stats_REML_6+tlrc \
1107 Control Kids USA 1107_faces_usa_cond1_CT_stats_REML_6+tlrc \
1108 Control Kids USA 1108_faces_usa_cond1_CT_stats_REML_6+tlrc \
1109 Control Kids USA 1109_faces_usa_cond1_CT_stats_REML_6+tlrc \
1110 Control Kids USA 1110_faces_usa_cond1_CT_stats_REML_6+tlrc \
1111 Control Kids USA 1111_faces_usa_cond1_CT_stats_REML_6+tlrc \
1112 Control Kids USA 1112_faces_usa_cond1_CT_stats_REML_6+tlrc \
1113 Control Kids USA 1113_faces_usa_cond1_CT_stats_REML_6+tlrc \
1114 Control Kids USA 1114_faces_usa_cond1_CT_stats_REML_6+tlrc \
1201 Control Teens USA 1201_faces_usa_cond1_CT_stats_REML_6+tlrc \
1202 Control Teens USA 1202_faces_usa_cond1_CT_stats_REML_6+tlrc \
1203 Control Teens USA 1203_faces_usa_cond1_CT_stats_REML_6+tlrc \
1204 Control Teens USA 1204_faces_usa_cond1_CT_stats_REML_6+tlrc \
1205 Control Teens USA 1205_faces_usa_cond1_CT_stats_REML_6+tlrc \
1206 Control Teens USA 1206_faces_usa_cond1_CT_stats_REML_6+tlrc \
1207 Control Teens USA 1207_faces_usa_cond1_CT_stats_REML_6+tlrc \
1208 Control Teens USA 1208_faces_usa_cond1_CT_stats_REML_6+tlrc \
1209 Control Teens USA 1209_faces_usa_cond1_CT_stats_REML_6+tlrc \
1210 Control Teens USA 1210_faces_usa_cond1_CT_stats_REML_6+tlrc \
1211 Control Teens USA 1211_faces_usa_cond1_CT_stats_REML_6+tlrc \
1212 Control Teens USA 1212_faces_usa_cond1_CT_stats_REML_6+tlrc \
1213 Control Teens USA 1213_faces_usa_cond1_CT_stats_REML_6+tlrc \
1214 Control Teens USA 1214_faces_usa_cond1_CT_stats_REML_6+tlrc \
1215 Control Teens USA 1215_faces_usa_cond1_CT_stats_REML_6+tlrc \
1216 Control Teens USA 1216_faces_usa_cond1_CT_stats_REML_6+tlrc \