Daily report job not being generated when using drafts

2007-10-09 00:00:01,376 ERROR [DefaultQuartzScheduler_Worker-1] [org.quartz.core.JobRunShell] run Job DEFAULT.DailyReportJob threw an unhandled Exception: 
java.lang.IllegalArgumentException: Could not check permissions for Draft = { id: 15401071, type: page, title: null} no suitable delegate found.
	at com.atlassian.confluence.security.DefaultPermissionManager.findDelegateFor(DefaultPermissionManager.java:119)
	at com.atlassian.confluence.security.DefaultPermissionManager.hasPermission(DefaultPermissionManager.java:31)
	at sun.reflect.GeneratedMethodAccessor498.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:324)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:287)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:181)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:148)
	at com.atlassian.spring.interceptors.SpringProfilingInterceptor.invoke(SpringProfilingInterceptor.java:20)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:170)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:170)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:176)
	at $Proxy32.hasPermission(Unknown Source)
	at com.atlassian.confluence.mail.ChangeDigestNotificationBean.userHasAccessTo(ChangeDigestNotificationBean.java:180)
	at com.atlassian.confluence.mail.ChangeDigestNotificationBean.getAllChangeReportForUser(ChangeDigestNotificationBean.java:81)
	at com.atlassian.confluence.mail.ChangeDigestNotificationBean.getAllChangeReports(ChangeDigestNotificationBean.java:167)
	at com.atlassian.confluence.mail.jobs.DailyReportJob.doExecute(DailyReportJob.java:62)
	at com.atlassian.quartz.jobs.AbstractJob.executeInternal(AbstractJob.java:87)
	at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:90)
	at com.atlassian.confluence.setup.quartz.DelegatingClusterAwareQuartzJobBean.executeJob(DelegatingClusterAwareQuartzJobBean.java:16)
	at com.atlassian.confluence.setup.quartz.AbstractClusterAwareQuartzJobBean.executeInternal(AbstractClusterAwareQuartzJobBean.java:44)
	at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:90)
	at org.quartz.core.JobRunShell.run(JobRunShell.java:203)
	at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520)