NPE when viewing a review

ERROR - Nested in javax.servlet.ServletException: javax.el.ELException: java.lang.NullPointerException:
javax.el.ELException: java.lang.NullPointerException
        at javax.el.BeanELResolver.getValue(BeanELResolver.java:266)
        at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:143)
        at com.sun.el.parser.AstValue.getValue(AstValue.java:138)
        at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:206)
        at org.apache.jasper.runtime.PageContextImpl.evaluateExpression(PageContextImpl.java:984)
        at org.apache.jsp.tag.web.review.frxDisplay_tag._jspx_meth_c_set_3(frxDisplay_tag.java:684)
        at org.apache.jsp.tag.web.review.frxDisplay_tag._jspx_meth_c_when_1(frxDisplay_tag.java:619)
        at org.apache.jsp.tag.web.review.frxDisplay_tag._jspx_meth_c_choose_1(frxDisplay_tag.java:588)
        at org.apache.jsp.tag.web.review.frxDisplay_tag.doTag(frxDisplay_tag.java:256)
        at org.apache.jsp.WEB_002dINF.jsp.crucible.review.monolithic.review_jsp._jspx_meth_rev_frxDisplay_0(review_jsp.java:2572)
        at org.apache.jsp.WEB_002dINF.jsp.crucible.review.monolithic.review_jsp._jspx_meth_c_forEach_8(review_jsp.java:2531)
        at org.apache.jsp.WEB_002dINF.jsp.crucible.review.monolithic.review_jsp._jspx_meth_c_when_9(review_jsp.java:2497)
        at org.apache.jsp.WEB_002dINF.jsp.crucible.review.monolithic.review_jsp._jspx_meth_c_choose_6(review_jsp.java:2465)
        at org.apache.jsp.WEB_002dINF.jsp.crucible.review.monolithic.review_jsp._jspService(review_jsp.java:437)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:93)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
        at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1144)
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:70)
        at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1136)
        at com.cenqua.crucible.filters.CrucibleFilter.doFilter(CrucibleFilter.java:139)
        at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1136)
        at com.cenqua.fisheye.web.filters.TotalityFilter.doFilter(TotalityFilter.java:188)
        at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1136)
        at com.atlassian.security.auth.trustedapps.filter.TrustedApplicationsFilter.doFilter(TrustedApplicationsFilter.java:98)
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236)
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
        at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1136)
        at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
        at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
        at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
        at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:285)
        at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:126)
        at com.opensymphony.webwork.dispatcher.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:114)
        at com.opensymphony.webwork.dispatcher.WebWorkResultSupport.execute(WebWorkResultSupport.java:143)
        at com.opensymphony.xwork.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:313)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:208)
        at com.cenqua.crucible.interceptors.ReviewInterceptor.intercept(ReviewInterceptor.java:49)

        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.cenqua.crucible.interceptors.CruciblePermissionInterceptor.intercept(CruciblePermissionInterceptor.java:40)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:31)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:186)
        at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:190)
        at com.opensymphony.xwork.DefaultActionProxy.execute(DefaultActionProxy.java:116)
        at com.opensymphony.webwork.dispatcher.DispatcherUtils.serviceAction(DispatcherUtils.java:273)
        at com.opensymphony.webwork.dispatcher.ServletDispatcher.service(ServletDispatcher.java:111)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
        at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1144)
        at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:83)
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
        at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1136)
        at com.cenqua.crucible.filters.CrucibleFilter.doFilter(CrucibleFilter.java:139)
        at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1136)
        at com.cenqua.fisheye.web.filters.TotalityFilter.doFilter(TotalityFilter.java:188)
        at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1136)
        at com.atlassian.security.auth.trustedapps.filter.TrustedApplicationsFilter.doFilter(TrustedApplicationsFilter.java:98)
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236)
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
        at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1136)
        at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
        at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
        at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
        at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:285)
        at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:126)
        at com.cenqua.fisheye.web.filters.TotalityFilter.doFilter(TotalityFilter.java:124)
        at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1136)
        at com.atlassian.security.auth.trustedapps.filter.TrustedApplicationsFilter.doFilter(TrustedApplicationsFilter.java:98)
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236)
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
        at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1136)
        at org.mortbay.servlet.UserAgentFilter.doFilter(UserAgentFilter.java:81)
        at org.mortbay.servlet.GzipFilter.doFilter(GzipFilter.java:129)
        at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1136)
        at com.cenqua.fisheye.web.filters.ProductInfoFilter.doFilter(ProductInfoFilter.java:32)
        at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1136)
        at com.cenqua.fisheye.web.filters.UpfrontFilter.doFilter(UpfrontFilter.java:39)
        at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1136)
        at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
        at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
        at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
        at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
        at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
        at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        at org.mortbay.jetty.Server.handle(Server.java:324)
        at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
        at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:829)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
        at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
        at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)
Caused by: java.lang.NullPointerException
        at com.cenqua.crucible.revision.managers.DefaultContentManager.loopBackFRI(DefaultContentManager.java:524)
        at com.cenqua.crucible.view.FRXDO.getFileRevisionInfo(FRXDO.java:225)
        at com.cenqua.crucible.view.FRXDO.isDir(FRXDO.java:297)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at javax.el.BeanELResolver.getValue(BeanELResolver.java:261)
        ... 109 more