I just started using the unified openstack client, and thought everything was working fine - I can run most commands, but some, like when I try to do a 'server create', and a couple of other commands, it gives me this same error:

 **ERROR: openstack Invalid volume client version '2'. must be one of: 1**

I've checked most of my logs, no smoking gun there. Any ideas? What's a 'volume client' anyway?

Thanks!