Exception seen at startup

When the controller is started for the second time, the following configuration exception is seen:

2014-08-27 13:00:24.342 PDT [config-pusher] ERROR o.o.c.n.c.t.TransactionProvider - Exception while commit of org.opendaylight.controller:TransactionName=ConfigTransaction-74-75,type=ConfigTransaction, aborting transaction
org.opendaylight.controller.config.api.ConflictingVersionException: Optimistic lock failed. Expected parent version 76, was 74
at org.opendaylight.controller.config.manager.impl.ConfigRegistryImpl.commitConfig(ConfigRegistryImpl.java:217) ~[na:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.7.0_65]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[na:1.7.0_65]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.7.0_65]
at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_65]
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:75) ~[na:1.7.0_65]
at sun.reflect.GeneratedMethodAccessor157.invoke(Unknown Source) ~[na:na]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.7.0_65]
at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_65]
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:279) ~[na:1.7.0_65]
at com.sun.jmx.mbeanserver.ConvertingMethod.invokeWithOpenReturn(ConvertingMethod.java:193) ~[na:1.7.0_65]
at com.sun.jmx.mbeanserver.ConvertingMethod.invokeWithOpenReturn(ConvertingMethod.java:175) ~[na:1.7.0_65]
at com.sun.jmx.mbeanserver.MXBeanIntrospector.invokeM2(MXBeanIntrospector.java:117) ~[na:1.7.0_65]
at com.sun.jmx.mbeanserver.MXBeanIntrospector.invokeM2(MXBeanIntrospector.java:54) ~[na:1.7.0_65]
at com.sun.jmx.mbeanserver.MBeanIntrospector.invokeM(MBeanIntrospector.java:237) ~[na:1.7.0_65]
at com.sun.jmx.mbeanserver.PerInterface.invoke(PerInterface.java:138) ~[na:1.7.0_65]
at com.sun.jmx.mbeanserver.MBeanSupport.invoke(MBeanSupport.java:252) ~[na:1.7.0_65]
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) ~[na:1.7.0_65]
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) ~[na:1.7.0_65]
at com.sun.jmx.mbeanserver.MXBeanProxy$InvokeHandler.invoke(MXBeanProxy.java:150) ~[na:1.7.0_65]
at com.sun.jmx.mbeanserver.MXBeanProxy.invoke(MXBeanProxy.java:167) ~[na:1.7.0_65]
at javax.management.MBeanServerInvocationHandler.invoke(MBeanServerInvocationHandler.java:252) ~[na:1.7.0_65]
at com.sun.proxy.$Proxy41.commitConfig(Unknown Source) ~[na:na]
at org.opendaylight.controller.config.util.ConfigRegistryJMXClient.commitConfig(ConfigRegistryJMXClient.java:102) ~[bundlefile:na]
at org.opendaylight.controller.netconf.confignetconfconnector.transactions.TransactionProvider.commitTransaction(TransactionProvider.java:110) ~[bundlefile:na]
at org.opendaylight.controller.netconf.confignetconfconnector.operations.Commit.handleWithNoSubsequentOperations(Commit.java:55) [bundlefile:na]
at org.opendaylight.controller.netconf.util.mapping.AbstractLastNetconfOperation.handle(AbstractLastNetconfOperation.java:33) [bundlefile:na]
at org.opendaylight.controller.netconf.util.mapping.AbstractNetconfOperation.handle(AbstractNetconfOperation.java:105) [bundlefile:na]
at org.opendaylight.controller.netconf.persist.impl.ConfigPusherImpl.sendRequestGetResponseCheckIsOK(ConfigPusherImpl.java:287) [bundlefile:na]
at org.opendaylight.controller.netconf.persist.impl.ConfigPusherImpl.pushConfig(ConfigPusherImpl.java:246) [bundlefile:na]
at org.opendaylight.controller.netconf.persist.impl.ConfigPusherImpl.pushConfigWithConflictingVersionRetries(ConfigPusherImpl.java:135) [bundlefile:na]
at org.opendaylight.controller.netconf.persist.impl.ConfigPusherImpl.internalPushConfigs(ConfigPusherImpl.java:111) [bundlefile:na]
at org.opendaylight.controller.netconf.persist.impl.ConfigPusherImpl.process(ConfigPusherImpl.java:78) [bundlefile:na]
at org.opendaylight.controller.netconf.persist.impl.osgi.ConfigPersisterActivator$InnerCustomizer$1.run(ConfigPersisterActivator.java:177) [bundlefile:na]
at java.lang.Thread.run(Thread.java:745) [na:1.7.0_65]

Note that this exception does not happen during the first controller startup (i.e. when it initializes its configuration from the factory defaults).

This exception is seen in the Cisco CTO distribution.