rabbitmq cluster problem : version_mismatch

Goal: a rabbitmq cluster ready for HA mirrored queues.
Problem: "Error: version_mismatch" during cluster command.

I went through the steps in the clustering guide and they worked fine on my freshly installed staging servers. I'm getting an error running through them on my production instance, trying to cluster a newly created EC2 instance in with my current production rabbitmq server.

Error: version_mismatch. Specifically one of them has 'topic_trie_node'.

I created the second server ( 10.7.203.145 ) from the first by creating a new volume from a snapshot of the disk from the first and then mounting the volume on a new EC2 instance.

Dear LazyWeb: Any ideas?

[andrew@ip-10-7-203-145]% sudo rabbitmqctl stop_app                               :) ~
Stopping node 'ip-10-7-203-145@ip-10-7-203-145' ...
...done.
[andrew@ip-10-7-203-145]% sudo rabbitmqctl reset                                  :) ~
Resetting node 'ip-10-7-203-145@ip-10-7-203-145' ...
...done.
[andrew@ip-10-7-203-145]% sudo rabbitmqctl cluster ip-10-7-203-145@ip-10-7-203-145 ip-10-7-203-85@ip-10-7-203-85Clustering node 'ip-10-7-203-145@ip-10-7-203-145' with ['ip-10-7-203-145@ip-10-7-203-145',
                                    'ip-10-7-203-85@ip-10-7-203-85'] ...
Error: {version_mismatch,[add_ip_to_listener,exchange_event_serial,
                          exchange_scratch,gm,ha_mirrors,mirrored_supervisor,
                          remove_user_scope,semi_durable_route,topic_trie,
                          user_admin_to_tags,add_queue_ttl,
                          multiple_routing_keys],
                         [add_queue_ttl,multiple_routing_keys,
                          add_ip_to_listener,exchange_event_serial,
                          exchange_scratch,gm,ha_mirrors,mirrored_supervisor,
                          remove_user_scope,semi_durable_route,topic_trie,
                          topic_trie_node,user_admin_to_tags]}
[andrew@ip-10-7-203-145]%                                                     2 :( ~

I agree with you prompt, sad-face indeed.