unexpected problem in re-submission to I-Tasser (option III)

Hi there,

I submitted to I-TASSER a modelling job last thursday (2-2-17), in which I included a file to specify secondary structure for specific residues (Option III).

It ran well (id number is S311896) and so I tried to run today a second modelling job, using a point mutant target protein.

However I now get an error message saying:

"ERROR
You have specified secondary structure. But there are errors (see below). Please fix it and resubmit your job:
>5m87:A is not a residue of your sequence
TheREMARK is not a residue of your sequence
1ATOM is not a residue of your sequence
2ATOM is not a residue of your sequence
3ATOM is not a residue of your sequence
4ATOM is not a residue of your sequence
...
3812CONECT is not a residue of your sequence
3813CONECT is not a residue of your sequence
3814CONECT is not a residue of your sequence"

instead of " The sequence has been successfully submitted to the I-TASSER server. "

Since the pdb file used to specify secondary structure for specific residues is exactly the same as the one that ran successfully last Thursday I do not understand what such errors may be and have no clue how to fix the problem.

Your help in that matter would be greatly appreciated.