Adding a node to cluster fails with error incompatible_cluster_version

Adding a node to cluster fails with error incompatible_cluster_version.

Adding the same node works once, but after removing and adding it again below error is returned:

Can be reproduced with the test:
./testrunner -i <ini_file> -t rebalance.rebalanceinout.RebalanceInOutTests.incremental_rebalance_out_in_with_mutation,items=0,replicas=2,GROUP=IN_OUT

[cluster:debug] [2012-07-30 19:18:18] [ns_1@10.1.3.67:ns_cluster:ns_cluster:handle_call:120] add_node("10.1.3.70", 8091, ..) -> {error,incompatible_cluster_version,
<<"This node cannot add another node ('ns_1@10.1.3.70') because of cluster version compatibility mismatch. Cluster works in [2,\n
0] mode and node only supports [1,\n
8]">>,
{incompatible_cluster_version,131072,1}}

Diagnostics are attached.