Crash on Linux changing rotamer for cysteine using Pick Sidechains tool.
Crashes using scripts also.
Shared 'cysteine crash' with scientists (puzzle 1786).

Load 'cysteine crash'
select segment 13 (cysteine)
bring up Pick Sidechains tool
change rotamer position
crash

log.txt:

***** STARTING THREAD ActionRotamerPicker
RT: 111111111111111111111111111111111111111111111111111111111111111111111111
core.conformation.Conformation: [ WARNING ] missing heavyatom: OXT on residue CYS:CtermProteinFull:NtermProteinFull 1

ERROR: Atom_::dihedral_between_bonded_children: atoms not found!
ERROR:: Exit from: /home/jflat06/foldit/develop/source/src/core/kinematics/tree/Atom_.cc line: 429

lsb_release -a

Distributor ID: Ubuntu
Description: Ubuntu 19.10
Release: 19.10
Codename: eoan