Random PermissionCheckDispatcher crashes when viewing pages

A few pages in our DB cause the following to be printed when the page is viewed after upgrading Confluence to 1.1. Trying to edit the page results in editing form with empty contents but no exception.

Cause:
org.apache.velocity.exception.MethodInvocationException: Invocation of method 'isPermitted' in class com.atlassian.confluence.security.PermissionCheckDispatcher threw exception class java.lang.IndexOutOfBoundsException : Index: 0, Size: 0

Stack Trace: [hide]
org.apache.velocity.exception.MethodInvocationException: Invocation of method 'isPermitted' in class com.atlassian.confluence.security.PermissionCheckDispatcher threw exception class java.lang.IndexOutOfBoundsException : Index: 0, Size: 0
        at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:309)
        at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:207)
        at org.apache.velocity.runtime.parser.node.ASTReference.evaluate(ASTReference.java:337)
        at org.apache.velocity.runtime.parser.node.ASTExpression.evaluate(ASTExpression.java:84)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:107)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:94)
        at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:344)
        at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:153)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:94)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:109)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:94)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:109)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:94)
        at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:271)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:128)
        at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:94)
        at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:109)
        at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:271)
        at org.apache.velocity.Template.merge(Template.java:296)
        at com.opensymphony.webwork.dispatcher.VelocityResult.doExecute(VelocityResult.java:94)
        at bucket.util.profiling.ProfiledVelocityResult.doExecute(ProfiledVelocityResult.java:18)
        at com.opensymphony.webwork.dispatcher.WebWorkResultSupport.execute(WebWorkResultSupport.java:115)
        at com.opensymphony.xwork.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:261)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:185)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:34)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
        at com.opensymphony.xwork.interceptor.DefaultWorkflowInterceptor.intercept(DefaultWorkflowInterceptor.java:55)
        at com.atlassian.confluence.core.ConfluenceWorkflowInterceptor.intercept(ConfluenceWorkflowInterceptor.java:34)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:34)
        at com.atlassian.confluence.core.ConfluenceValidationInterceptor.intercept(ConfluenceValidationInterceptor.java:16)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:34)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
        at com.atlassian.confluence.security.actions.PermissionCheckInterceptor.intercept(PermissionCheckInterceptor.java:40)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
        at com.atlassian.confluence.pages.actions.PageAwareInterceptor.intercept(PageAwareInterceptor.java:73)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:34)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:34)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
        at com.atlassian.confluence.core.ConfluenceAutowireInterceptor.intercept(ConfluenceAutowireInterceptor.java:25)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:34)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:34)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
        at com.atlassian.confluence.util.XWorkTransactionInterceptor.intercept(XWorkTransactionInterceptor.java:124)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:34)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
        at com.opensymphony.xwork.DefaultActionProxy.execute(DefaultActionProxy.java:115)
        at com.opensymphony.webwork.dispatcher.ServletDispatcher.serviceAction(ServletDispatcher.java:278)
        at com.opensymphony.webwork.dispatcher.ServletDispatcher.service(ServletDispatcher.java:248)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:432)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:356)
        at com.atlassian.confluence.servlet.SimpleDisplayServlet.doGet(SimpleDisplayServlet.java:55)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:145)
        at com.atlassian.confluence.util.profiling.ProfilingPageFilter.parsePage(ProfilingPageFilter.java:146)
        at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:61)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:165)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at com.atlassian.seraph.filter.LoginFilter.doFilter(LoginFilter.java:181)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at com.atlassian.johnson.filters.JohnsonFilter.doFilter(JohnsonFilter.java:96)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at org.springframework.orm.hibernate.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:117)
        at bucket.custom.FlushingSpringSessionInViewFilter.doFilterInternal(FlushingSpringSessionInViewFilter.java:30)
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:73)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:132)
        at com.atlassian.confluence.util.error.ProfilingAndErrorFilter.doFilter(ProfilingAndErrorFilter.java:25)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at com.atlassian.core.filters.AbstractEncodingFilter.doFilter(AbstractEncodingFilter.java:38)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2417)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:193)
        at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:309)
        at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:387)
        at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:673)
        at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:615)
        at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:786)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:666)
        at java.lang.Thread.run(Thread.java:534)

Build Information:
Uptime: 2 hours, 15 minutes, 14 seconds
Version: 1.1
Build Number: 53

Server Information:
Application Server: Apache Tomcat/4.1.29
Servlet Version: 2.3
Database Dialect: net.sf.hibernate.dialect.MySQLDialect

Memory Information:
Total Memory: 161 MB
Free Memory: 36 MB
Used Memory: 125 MB

Request Logging:
0 log statements generated by this request: