Rick,
Thanks for the prompt reply! I think it's something wrong with the output of McRetroTs, because 1d_tool.py fails to parse it.
[sudregp@sbrbmeg afni]$ 1d_tool.py -show_rows_cols oba.slibase.1D
** error: unknown trailing arguments : ['oba.slibase.1D']
(the input files have 15750 lines each).
I don't know the specifics of the output file format, but it looks OK to me (322 lines, but the first 5 are headers, and the last 2 are close tag and new line). Maybe I should send it to you?
Thanks again!
G