Hi BFair,

Bob just added an ability to 3dttest++ that should
alleviate this problem. Like perhaps 26 other
programs now, if the final argument to 3dttest++
is "-@", then it will read the contents of a text
file as if it were provided on the command line.

So given your sample command in the post, you
should be able to do some thing like putting the
following in a text file, say 3dttest++.args.txt:

-setA GroupA 
000000022453 /Users/bfair/Documents/Im/Im_Task_Activations/Con_10_arc001/processed/spmstatsintra/000000022453/SessionB/EPI_short_MID/swea/con_0010.nii 
000000075717 /Users/bfair/Documents/Im/Im_Task_Activations/Con_10_arc001/processed/spmstatsintra/000000075717/SessionB/EPI_short_MID/swea/con_0010.nii

(and note that there are no '\' characters at the
ends of the lines in the text file), and then run
3dttest++ as follows:

3dttest++ -overwrite -@ < 3dttest++.args.txt

If you give that a try, please let us know how it goes.
For that to work, please use the now updated AFNI
binaries.

To repeat, that -@ option should be the last one
passed to the main program, as is done with this
example.

Thanks,

- rick