pgcli: Can't connect to Greenplum server (psycopg2.ProgrammingError: column d.datcollate does not exist)

So, after getting past the jedi issue, I got pgcli to work on a local PostgreSQL instance. I’m now trying to connect to a Greenplum database (a distributed database built on top of PostgreSQL. Anything that can talk to vanilla Postgres should be able to talk to Greenplum…I’ve had no issues with, eg, pgAdmin or psycopg2). Here’s what happens:

$ pgcli postgresql://[username]:[password]@[host]/[dbname]
Traceback (most recent call last):
  File "/usr/local/bin/pgcli", line 9, in <module>
    load_entry_point('pgcli==0.10.0', 'console_scripts', 'pgcli')()
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 610, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 590, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 782, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python2.7/site-packages/click/core.py", line 416, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/pgcli/main.py", line 86, in cli
    refresh_completions(pgexecute, completer)
  File "/usr/local/lib/python2.7/site-packages/pgcli/main.py", line 180, in refresh_completions
    completer.extend_database_names(pgexecute.databases())
  File "/usr/local/lib/python2.7/site-packages/pgcli/pgexecute.py", line 138, in databases
    cur.execute(self.databases_query)
psycopg2.ProgrammingError: column d.datcollate does not exist
LINE 4:        d.datcollate as "Collate",

Googling seems to turn up nothing.

Thanks again for your time.