I am trying to build out my Model Groups on 2016.14 but keep having crashes. I have simply added a new Model Group and bang failure. I have attached the diagnostics.
I believe it has something to do with the length of the Group Name. When my group is Named: Grp Flood: Center. It fails every time I edit it. Delete and recreate as: Grp Flood: Ctr, works without issue. Just to check recreated the original name, same error.