Getting ***ERROR*** [set] null on a couple of commands

In running through "First Steps with Scaffolding" in the docs, I got an "**ERROR** [set] null" as a result of step 5 (incidentally, the new-entity has changed to just entity). I wanted to figure out what was going on and tried to execute "set VERBOSE" and actually got the same error.

I built the lastest code from master in trying to do this.