mq: error when setting {mq_durable_queues, true}

[matteoredaelli]

<<"NOT_ALLOWED - cannot redeclare exchange 'EBOT' in vhost '/' with different type, durable or autodelete value">>}

=ERROR REPORT==== 18-Sep-2010::14:42:28 ===
** Generic server <0.86.0> terminating
** Last message in was {'EXIT',<0.91.0>,socket_closed}
** When Server state == {nc_state,
{amqp_params,<<"guest">>,<<"guest">>,<<"/">>,
"localhost",5672,0,0,0,none,[]},
#Port<0.2815>,<0.91.0>,<0.90.0>,<0.89.0>,0,0,
{nc_closing,server_initiated_close,
{'connection.close',530,
<<"NOT_ALLOWED - cannot redeclare exchange 'EBOT' in vhost '/' with different type, durable or autodelete value">>,
40,10},
none,wait_socket_close},