During single state design of protein the following error is encountered after relaxing the structure at the fixed backbone design stage and also by design iterated by backrub motion.
protocols.jd2.JobDistributor: [ ERROR ]
[ERROR] Exception caught by JobDistributor for job 4MUI_relax_design_0010
[ ERROR ] UtilityExitException
ERROR: Error in core::conformation::Conformation::residue(): The sequence position requested was 0. Pose numbering starts at 1.
Any help in resolving the problem will be appreciated.