[modeller_usage] Mutate script crashing

Hi,

I am trying to mutate a residue on a protein. The residue IS contained in the sequence. Hence, am a little lost about the following error:

Traceback (most recent call last): File "/Users/arjun/script/mutate_model.py", line 89, in <module> ali.append_model(mdl1, atom_files=modelname, align_codes=modelname) File "/Library/modeller-9.11/modlib/modeller/alignment.py", line 110, in append_model atom_files, align_codes) ValueError: mod_ali_412E> align code ( /Users/arjun/PDB/APOA1/mutated_models/2a01a.pdb) too long; length 47 is greater than max length 40

This is a sub structure of only the chain 'A' I saved from the original.

Regards