NullPointerException in ViewFileAction

From a customer's log:

20:05:51 ERROR - Unable to find revision for :\main\bld_spb_freevoice4pc\4 revMap size: 14
20:05:51 ERROR - /browse/FREEVOICE4PC/vobs/freevoice4pc/src/freevoice/endui/html/main.html
java.lang.NullPointerException
at com.cenqua.fisheye.web.ViewFileAction.canAnnotate(ViewFileAction.java:315)
at com.cenqua.fisheye.web.ViewFileAction.handleFileRequest(ViewFileAction.java:180)
at com.cenqua.fisheye.web.ViewFileAction.handleRequest(ViewFileAction.java:142)
at com.cenqua.fisheye.web.BaseAction.processRequest(BaseAction.java:181)
at com.cenqua.fisheye.web.ActionDispatcherServlet.doIt(ActionDispatcherServlet.java:224)
at com.cenqua.fisheye.web.ActionDispatcherServlet.doGet(ActionDispatcherServlet.java:55)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502)
at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1208)
at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:55)
at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:41)
at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1200)
at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:55)
at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:41)
at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1200)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:83)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1200)
at com.cenqua.crucible.filters.CrucibleFilter.doFilter(CrucibleFilter.java:141)
at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1200)
at com.cenqua.fisheye.web.filters.TotalityFilter.doFilter(TotalityFilter.java:245)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1200)
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:1200)
at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
at com.atlassian.oauth.serviceprovider.internal.servlet.OAuthFilter.doFilter(OAuthFilter.java:69)
at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:55)
at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:41)
at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1200)
at org.mortbay.servlet.UserAgentFilter.doFilter(UserAgentFilter.java:81)
at org.mortbay.servlet.GzipFilter.doFilter(GzipFilter.java:129)
at com.cenqua.fisheye.web.filters.CustomIncludableGzipFilter.doFilter(CustomIncludableGzipFilter.java:21)
at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1200)
at com.cenqua.fisheye.web.filters.ProductInfoFilter.doFilter(ProductInfoFilter.java:36)
at org.mortbay.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1200)
at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:55)
at com.atlassian.plugin.servlet.filter.ServletFilterModuleContainerFilter.doFilter(ServletFilterModuleContainerFilter.java:41)