I am having a hard time figuring out what the -gltsym command wants in the glt files -- when I search the message board using -glt or -gltsym, it says there are no messages with these words? Anyway, I am getting the following error:

** FATAL ERROR: Can't read GLT matrix from file glt1.txt

Which has the following in it: +Cond1[3..5] -Cond6[3..5] in which Cond1 and Cond6 are defined by -stim_labels. I have modeled this after the example in afni06_decon.pdf, which says the following:

Combining subsets of the β weights is also possible with -gltsym :
+HumanMovie[2..6] -HumanPoint[2..6]
This GLT would add up just the #2,3,4,5, & 6 β weights for one type of stimulus and subtract the sum of the #2,3,4,5, & 6 β weights for another type of stimulus

In3dDeconvolve file:

3dDeconvolve -input r4.scale+orig.HEAD \
-polort A \
-mask skull_mask+orig \
-num_stimts 16 \
-stim_times 1 Cond1.txt 'CSPLIN(0,15,6)' \
-stim_label 1 Cond1 \
-stim_times 2 Cond2.txt 'CSPLIN(0,15,6)' \
-stim_label 2 Cond2 \
-stim_times 3 Cond3.txt 'CSPLIN(0,15,6)' \
-stim_label 3 Cond3 \
-stim_times 4 Cond4.txt 'CSPLIN(0,15,6)' \
-stim_label 4 Cond4 \
-stim_times 5 Cond5.txt 'CSPLIN(0,15,6)' \
-stim_label 5 Cond5 \
-stim_times 6 Cond6.txt 'CSPLIN(0,15,6)' \
-stim_label 6 Cond6 \
-stim_times 7 Cond7.txt 'CSPLIN(0,15,6)' \
-stim_label 7 Cond7 \
-stim_times 8 Cond8.txt 'CSPLIN(0,15,6)' \
-stim_label 8 Cond8 \
-stim_times 9 Cond9.txt 'CSPLIN(0,15,6)' \
-stim_label 9 Cond9 \
-stim_times 10 Cond10.txt 'CSPLIN(0,15,6)' \
-stim_label 10 Other \
-stim_file 11 Motion.1D'[0]' -stim_base 11 -stim_label 11 roll \
-stim_file 12 Motion.1D'[1]' -stim_base 12 -stim_label 12 pitch \
-stim_file 13 Motion.1D'[2]' -stim_base 13 -stim_label 13 yaw \
-stim_file 14 Motion.1D'[3]' -stim_base 14 -stim_label 14 dS \
-stim_file 15 Motion.1D'[4]' -stim_base 15 -stim_label 15 dL \
-stim_file 16 Motion.1D'[5]' -stim_base 16 -stim_label 16 dP \
-jobs 2 \
-gltsym glt1.txt -glt_label 1 C1_C6 \
-bucket stats.GLT

In glt1.txt
+Cond1[3..5] -Cond6[3..5]


thanks, mb