I get this stacktrace when I do something wrong (see below):

The first part of the exception is correct: I didn't define httpinvoker.BacklogService, but httpinvoker.GrailsBacklogService. However, the rest of the stacktrace is mentioning classcastexceptions etc, which I think is due to the fact that Grails doesn't handle the error correctly (ie show up an error.gsp, instead of handling it in a way httpinvoker can deal with).

[252000] errors.GrailsExceptionResolver No bean named 'httpinvoker.BacklogService' is defined
org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'httpinvoker.BacklogService' is defined
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:387)
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:968)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:246)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:168)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:238)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:881)
at org.springframework.web.servlet.handler.AbstractHandlerMapping.getHandler(AbstractHandlerMapping.java:194)
at org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1048)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:854)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:809)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:511)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
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$CachedChain.doFilter(ServletHandler.java:1098)
at org.codehaus.groovy.grails.web.mapping.filter.UrlMappingsFilter.processFilterChain(UrlMappingsFilter.java:157)
at org.codehaus.groovy.grails.web.mapping.filter.UrlMappingsFilter.doFilterInternal(UrlMappingsFilter.java:148)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
at org.codehaus.groovy.grails.web.sitemesh.GrailsPageFilter.parsePage(GrailsPageFilter.java:123)
at org.codehaus.groovy.grails.web.sitemesh.GrailsPageFilter.doFilter(GrailsPageFilter.java:86)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
at org.codehaus.groovy.grails.web.servlet.mvc.GrailsWebRequestFilter.doFilterInternal(GrailsWebRequestFilter.java:65)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
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$CachedChain.doFilter(ServletHandler.java:1089)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:365)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:295)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:503)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:841)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:639)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:204)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:379)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:361)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)
[252031] errors.GrailsExceptionResolver Unable to render errors view: org.springframework.web.context.request.ServletRequestAttributes
java.lang.ClassCastException: org.springframework.web.context.request.ServletRequestAttributes
at org.codehaus.groovy.grails.web.mapping.DefaultUrlMappingInfo.evaluateNameForValue(DefaultUrlMappingInfo.java:154)
at org.codehaus.groovy.grails.web.mapping.DefaultUrlMappingInfo.getViewName(DefaultUrlMappingInfo.java:146)
at org.codehaus.groovy.grails.web.errors.GrailsExceptionResolver.resolveException(GrailsExceptionResolver.java:69)
at org.springframework.web.servlet.DispatcherServlet.processHandlerException(DispatcherServlet.java:1113)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:896)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:809)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:511)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1098)
at org.codehaus.groovy.grails.web.mapping.filter.UrlMappingsFilter.processFilterChain(UrlMappingsFilter.java:157)
at org.codehaus.groovy.grails.web.mapping.filter.UrlMappingsFilter.doFilterInternal(UrlMappingsFilter.java:148)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
at org.codehaus.groovy.grails.web.sitemesh.GrailsPageFilter.parsePage(GrailsPageFilter.java:123)
at org.codehaus.groovy.grails.web.sitemesh.GrailsPageFilter.doFilter(GrailsPageFilter.java:86)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
at org.codehaus.groovy.grails.web.servlet.mvc.GrailsWebRequestFilter.doFilterInternal(GrailsWebRequestFilter.java:65)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:365)
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:712)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:295)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:503)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:841)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:639)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:204)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:379)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:361)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)
2008-07-10 09:29:19.534::WARN: Nested in org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.codehaus.groovy.grails.exceptions.GrailsRuntimeException: java.lang.ClassCastException: org.springframework.web.context.request.ServletRequestAttributes:
org.codehaus.groovy.grails.exceptions.GrailsRuntimeException: java.lang.ClassCastException: org.springframework.web.context.request.ServletRequestAttributes
at org.codehaus.groovy.grails.web.errors.GrailsExceptionResolver.resolveException(GrailsExceptionResolver.java:94)
at org.springframework.web.servlet.DispatcherServlet.processHandlerException(DispatcherServlet.java:1113)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:896)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:809)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:511)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
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$CachedChain.doFilter(ServletHandler.java:1098)
at org.codehaus.groovy.grails.web.mapping.filter.UrlMappingsFilter.processFilterChain(UrlMappingsFilter.java:157)
at org.codehaus.groovy.grails.web.mapping.filter.UrlMappingsFilter.doFilterInternal(UrlMappingsFilter.java:148)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
at org.codehaus.groovy.grails.web.sitemesh.GrailsPageFilter.parsePage(GrailsPageFilter.java:123)
at org.codehaus.groovy.grails.web.sitemesh.GrailsPageFilter.doFilter(GrailsPageFilter.java:86)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
at org.codehaus.groovy.grails.web.servlet.mvc.GrailsWebRequestFilter.doFilterInternal(GrailsWebRequestFilter.java:65)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
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$CachedChain.doFilter(ServletHandler.java:1089)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:365)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:295)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:503)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:841)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:639)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:204)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:379)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:361)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)
Caused by: java.lang.ClassCastException: org.springframework.web.context.request.ServletRequestAttributes
at org.codehaus.groovy.grails.web.mapping.DefaultUrlMappingInfo.evaluateNameForValue(DefaultUrlMappingInfo.java:154)
at org.codehaus.groovy.grails.web.mapping.DefaultUrlMappingInfo.getViewName(DefaultUrlMappingInfo.java:146)
at org.codehaus.groovy.grails.web.errors.GrailsExceptionResolver.resolveException(GrailsExceptionResolver.java:69)
... 38 more
2008-07-10 09:29:19.550::WARN: /scrum-grails/httpinvoker/BacklogService
org.codehaus.groovy.grails.exceptions.GrailsRuntimeException: java.lang.ClassCastException: org.springframework.web.context.request.ServletRequestAttributes
at org.codehaus.groovy.grails.web.errors.GrailsExceptionResolver.resolveException(GrailsExceptionResolver.java:94)
at org.springframework.web.servlet.DispatcherServlet.processHandlerException(DispatcherServlet.java:1113)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:896)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:809)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:511)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1098)
at org.codehaus.groovy.grails.web.mapping.filter.UrlMappingsFilter.processFilterChain(UrlMappingsFilter.java:157)
at org.codehaus.groovy.grails.web.mapping.filter.UrlMappingsFilter.doFilterInternal(UrlMappingsFilter.java:148)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
at org.codehaus.groovy.grails.web.sitemesh.GrailsPageFilter.parsePage(GrailsPageFilter.java:123)
at org.codehaus.groovy.grails.web.sitemesh.GrailsPageFilter.doFilter(GrailsPageFilter.java:86)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
at org.codehaus.groovy.grails.web.servlet.mvc.GrailsWebRequestFilter.doFilterInternal(GrailsWebRequestFilter.java:65)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:236)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:365)
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:712)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:295)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:503)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:841)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:639)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:204)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:379)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:361)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)
Caused by: java.lang.ClassCastException: org.springframework.web.context.request.ServletRequestAttributes
at org.codehaus.groovy.grails.web.mapping.DefaultUrlMappingInfo.evaluateNameForValue(DefaultUrlMappingInfo.java:154)
at org.codehaus.groovy.grails.web.mapping.DefaultUrlMappingInfo.getViewName(DefaultUrlMappingInfo.java:146)
at org.codehaus.groovy.grails.web.errors.GrailsExceptionResolver.resolveException(GrailsExceptionResolver.java:69)
... 38 more
2008-07-10 09:29:19.581:/scrum-grails:INFO: Initializing Spring FrameworkServlet 'grails-errorhandler'
2008-07-10 09:29:19.581::WARN: EXCEPTION
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:583)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:511)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
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.handle(ServletHandler.java:367)
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:712)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:268)
at org.mortbay.jetty.servlet.Dispatcher.error(Dispatcher.java:135)
at org.mortbay.jetty.servlet.ErrorPageErrorHandler.handle(ErrorPageErrorHandler.java:101)
at org.mortbay.jetty.Response.sendError(Response.java:275)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:434)
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:712)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:295)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:503)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:841)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:639)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:204)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:379)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:361)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)
Caused by: java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
at org.springframework.web.context.request.RequestContextHolder.currentRequestAttributes(RequestContextHolder.java:121)
at org.codehaus.groovy.grails.web.util.WebUtils.retrieveGrailsWebRequest(WebUtils.java:247)
at org.codehaus.groovy.grails.web.servlet.ErrorHandlingServlet.doDispatch(ErrorHandlingServlet.java:64)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:809)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
... 27 more
2008-07-10 09:29:19.597::WARN: Nested in org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.:
java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.
at org.springframework.web.context.request.RequestContextHolder.currentRequestAttributes(RequestContextHolder.java:121)
at org.codehaus.groovy.grails.web.util.WebUtils.retrieveGrailsWebRequest(WebUtils.java:247)
at org.codehaus.groovy.grails.web.servlet.ErrorHandlingServlet.doDispatch(ErrorHandlingServlet.java:64)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:809)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:511)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
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.handle(ServletHandler.java:367)
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:712)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:268)
at org.mortbay.jetty.servlet.Dispatcher.error(Dispatcher.java:135)
at org.mortbay.jetty.servlet.ErrorPageErrorHandler.handle(ErrorPageErrorHandler.java:101)
at org.mortbay.jetty.Response.sendError(Response.java:275)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:434)
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:712)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:295)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:503)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:841)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:639)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:204)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:379)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:361)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)