ClassCastException from getAbstractPageById thrown by AttachmentNotFoundAction

2012-01-11 16:15:59,853 ERROR [TP-Processor11] [ContainerBase.[Standalone].[localhost].[/]] log Unhandled exception occurred whilst decorating page
 -- url: /attachmentnotfound.action | userName: anonymous 
java.lang.ClassCastException: com.atlassian.confluence.setup.settings.GlobalDescription cannot be cast to com.atlassian.confluence.pages.AbstractPage
	at com.atlassian.confluence.pages.persistence.dao.hibernate.HibernateAbstractPageDao.getAbstractPageById(HibernateAbstractPageDao.java:18)
	at sun.reflect.GeneratedMethodAccessor489.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at $Proxy38.getAbstractPageById(Unknown Source)
	at com.atlassian.confluence.pages.DefaultPageManager.getAbstractPage(DefaultPageManager.java:113)
	at sun.reflect.GeneratedMethodAccessor488.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at com.atlassian.spring.interceptors.SpringProfilingInterceptor.invoke(SpringProfilingInterceptor.java:16)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at $Proxy40.getAbstractPage(Unknown Source)
	at com.atlassian.confluence.spaces.DefaultSpaceManager.getSpaceFromPageId(DefaultSpaceManager.java:531)