2015-12-29 09:12:15,187 ERROR [AtlassianEvent::CustomizableThreadFactory-2] [atlassian.event.internal.AsynchronousAbleEventDispatcher] run There was an exception thrown trying to dispatch event [com.atlassian.confluence.plugins.questions.internal.lifecycle.ActiveObjectsController$AsyncEvent@c52477f] from the invoker [com.atlassian.confluence.event.ConfluenceListenerHandlersConfiguration$TimingListenerHandler$1$1@52251701]
java.lang.RuntimeException: com.atlassian.activeobjects.internal.ActiveObjectsInitException: bundle [com.atlassian.confluence.plugins.confluence-questions]
	...
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.concurrent.ExecutionException: com.atlassian.activeobjects.internal.ActiveObjectsInitException: bundle [com.atlassian.confluence.plugins.confluence-questions]
	at com.google.common.util.concurrent.AbstractFuture$Sync.getValue(AbstractFuture.java:331)
	at com.google.common.util.concurrent.AbstractFuture$Sync.get(AbstractFuture.java:318)
....
	at java.lang.reflect.Method.invoke(Method.java:497)
	at com.atlassian.event.internal.SingleParameterMethodListenerInvoker.invoke(SingleParameterMethodListenerInvoker.java:36)
	... 5 more
Caused by: com.atlassian.activeobjects.internal.ActiveObjectsInitException: bundle [com.atlassian.confluence.plugins.confluence-questions]
	at com.atlassian.activeobjects.osgi.TenantAwareActiveObjects$1$1$1.call(TenantAwareActiveObjects.java:95)
	at com.atlassian.activeobjects.osgi.TenantAwareActiveObjects$1$1$1.call(TenantAwareActiveObjects.java:86)
	at com.atlassian.sal.core.executor.ThreadLocalDelegateCallable.call(ThreadLocalDelegateCallable.java:38)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	... 3 more
Caused by: com.mysema.query.QueryException: Caught SQLException for delete from `CONTENTPROPERTIES`
where `CONTENTPROPERTIES`.`PROPERTYID` in (select `PROPERTY_ID`
from (select `answerProperties`.`PROPERTYID` as `PROPERTY_ID`
from `CONTENT` `answers`
join `CONTENTPROPERTIES` `answerProperties`
on `answerProperties`.`CONTENTID` = `answers`.`CONTENTID`
left join (select `questionProperties`.`LONGVAL` as `ANSWER_ID`
from `CONTENT` `questions`
join `CONTENTPROPERTIES` `questionProperties`
on `questionProperties`.`CONTENTID` = `questions`.`CONTENTID`
where `questions`.`PLUGINKEY` = 'com.atlassian.confluence.plugins.confluence-questions:question' and `questions`.`PREVVER` is null and `questionProperties`.`PROPERTYNAME` = 'accepted') as `ACCEPTED_ANSWER_IDS`
on `answers`.`CONTENTID` = `ANSWER_ID`
where `answers`.`PLUGINKEY` = 'com.atlassian.confluence.plugins.confluence-questions:answer' and `answers`.`PREVVER` is null and `answerProperties`.`PROPERTYNAME` = 'accepted' and `ANSWER_ID` is null) as `TMP`)
	at com.mysema.query.sql.DefaultSQLExceptionTranslator.translate(DefaultSQLExceptionTranslator.java:38)
	at com.mysema.query.sql.Configuration.translate(Configuration.java:451)
	at com.mysema.query.sql.dml.SQLDeleteClause.execute(SQLDeleteClause.java:169)
	at com.atlassian.confluence.plugins.questions.internal.upgrade.DuplicatedAcceptedAnswersRemover.deleteDuplicatedAcceptedAnswers(DuplicatedAcceptedAnswersRemover.java:83)
...
	at com.atlassian.activeobjects.internal.AbstractActiveObjectsFactory.create(AbstractActiveObjectsFactory.java:67)
	at com.atlassian.activeobjects.internal.DelegatingActiveObjectsFactory.create(DelegatingActiveObjectsFactory.java:32)
	at com.atlassian.activeobjects.osgi.TenantAwareActiveObjects$1$1$1.call(TenantAwareActiveObjects.java:91)
	... 6 more
Caused by: java.sql.SQLException: You can't specify target table 'CONTENTPROPERTIES' for update in FROM clause