Hello guys.

I would like to insert sequences in an existing alignment with the software 'MAFFT'. But, after doing the "progressive alignment 1 & 2" and constructing a UPGMA tree, this software returns the following error :

disttbfast (nuc) Version 7.222 alg=M, model=DNA200 (2), 1.53 (4.59), -0.00 (-0.00), noshift, amax=0.0
0 thread(s)


Strategy:
 FFT-INS-2 (Not tested.)
 ?

If unsure which option to use, try 'mafft --auto input > output'.
For more information, see 'mafft --help', 'mafft --man' and the mafft page.

The default gap scoring scheme has been changed in version 7.110 (2013 Oct).
It tends to insert more gaps into gap-rich regions than previous versions.
To disable this change, add the --leavegappyregion option.

Do you have any idea what does this error mean ? I searched it but I didn't find anything.

Thank you in advance for your answers :)

Best regards