Xdcr - Replication halts during rebalancing in 2 nodes at destination.

Setup a unidirectional replication between 2:2 node clusters from cluster1 to cluster2.
Load 4M items on cluster1.
Rebalance in 2 nodes at cluster2.

• Start replication from cluster2 to cluster1
  -Rebalance is completed successfully on cluster2

Error
---------

• Replication has terminated on the clusters.

Seeing this on the logs on the source side.

• • Reason for termination ==
  • {function_clause,[{couch_api_wrap,'get_missing_revs/2-fun-1',
    [400,
    [ {"Cache-Control","must-revalidate"},
    {"Content-Length","50"},
    {"Content-Type","application/json"},
    {"Date", "Tue, 28 Aug 2012 22:50:22 GMT"},
    {"Server", "MochiWeb/1.0 (Any of you quaids got a smint?)"}],
    {[{<<"error">>,<<"bad_request">>},
    {<<"reason">>, <<"not_my_vbucket">>}]}]},
    {xdc_vbucket_rep_worker,find_missing,2},
    {xdc_vbucket_rep_worker,queue_fetch_loop,4}]}
    
    [xdcr:error,2012-08-28T15:50:22.517,ns_1@10.3.121.32:<0.30832.38>:xdc_vbucket_rep:terminate:203]Shutting down without ever successfully initilizing: shutdown
    [xdcr:debug,2012-08-28T15:50:22.528,ns_1@10.3.121.32:<0.30597.38>:concurrency_throttle:signal_waiting:174]nothing to schedule, # of active reps: 168, # of acrtive target nodes: 1
    
    And
    
    
    error_logger:error,2012-08-28T16:03:32.555,ns_1@10.3.121.32:error_logger:ale_error_logger_handler:log_report:72]
    =========================CRASH REPORT=========================
    crasher:
    initial call: xdc_vbucket_rep:init/1
    pid: <0.25097.54>
    registered_name: []
    exception exit: {function_clause,
    [{couch_api_wrap,'get_missing_revs/2-fun-1',
    [400,
    [{"Cache-Control","must-revalidate"}

    ,
    

    {"Content-Length","50"}

    ,
    

    {"Content-Type","application/json"}

    ,
    

    {"Date","Tue, 28 Aug 2012 23:03:32 GMT"}

    ,
    

    {"Server", "MochiWeb/1.0 (Any of you quaids got a smint?)"}

    ],
    

    Unknown macro: {[{<<"error">>,<<"bad_request">>}, {<<"reason">>,<<"not_my_vbucket">>}]}

    ]},
    

    {xdc_vbucket_rep_worker,find_missing,2}

    ,
    

    {xdc_vbucket_rep_worker,queue_fetch_loop,4}

    ]}
    in function gen_server:terminate/6
    ancestors: [<0.25029.54>,<0.25025.54>,xdc_replication_sup,ns_server_sup,
    ns_server_cluster_sup,<0.60.0>]
    messages: [{'EXIT',<0.29078.54>,
    {function_clause,
    [{couch_api_wrap,'get_missing_revs/2-fun-1',

Adding more logs.