Hi Andrew,
Yes, I did try the Repair 0r Configure Agents option, same problem.
I ahev worked around by copyinf the CP017273.EXE file to the managed system and installing SSH locally, but that is a painful and time-consuming workaround with an environment of 12 C7000 chassis!
I may have to resort to SCCM to deploy OpenSSH instead of SIM. Not looking forward to that.