I took 5.4-beta-22 out for a spin yesterday and I ran into the
following exception when trying to run the AppEngine local dev server
and there is an error on the page and Tapestry attempts to display the
exception page. I'm not yet sure if this is going to work when
deployed to AppEngine proper, but I was wondering if there is a way to
override either whether the exception page attempts to do this.


In the local environment, I can certainly start the local dev server
with a <jvmFlag>-Denable_all_permissions=true</jvmFlag> option that
avoids the issue in my local setup, so it's not a massive deal. Yet,
this was certainly not happening in 5.3.7 so I wonder what changed.


Other than that, 5.4 just looks fantastic - I had been holding off on
trying it out , but now I can't wait this release to go out !

Any ideas ?


Cheers -

org.apache.tapestry5.internal.services.RenderQueueException: Render
queue error in SetupRender[core/ExceptionReport:loop_0]: Failure
reading parameter 'source' of component core/ExceptionReport:loop_0:
access denied ("java.lang.RuntimePermission" "modifyThreadGroup") [at
classpath:org/apache/tapestry5/corelib/pages/ExceptionReport.tml, line
110]
        at 
org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:87)
        at 
org.apache.tapestry5.internal.services.PageRenderQueueImpl.render(PageRenderQueueImpl.java:114)
        at $PageRenderQueue_954065d89e49.render(Unknown Source)
        at $PageRenderQueue_954065d89e48.render(Unknown Source)
        at 
org.apache.tapestry5.internal.services.MarkupRendererTerminator.renderMarkup(MarkupRendererTerminator.java:37)
        at 
org.apache.tapestry5.internal.services.PageNameMetaInjector.renderMarkup(PageNameMetaInjector.java:41)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$29.renderMarkup(TapestryModule.java:1810)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$28.renderMarkup(TapestryModule.java:1800)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$27.renderMarkup(TapestryModule.java:1784)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$26.renderMarkup(TapestryModule.java:1768)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.internal.services.javascript.AddBrowserCompatibilityStyles.renderMarkup(AddBrowserCompatibilityStyles.java:45)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.internal.services.javascript.ConfigureHTMLElementFilter.renderMarkup(ConfigureHTMLElementFilter.java:45)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.modules.JavaScriptModule$1.renderMarkup(JavaScriptModule.java:259)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$25.renderMarkup(TapestryModule.java:1751)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at $MarkupRenderer_954065d89e47.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.internal.services.PageMarkupRendererImpl.renderPageMarkup(PageMarkupRendererImpl.java:47)
        at $PageMarkupRenderer_954065d89e45.renderPageMarkup(Unknown Source)
        at 
org.apache.tapestry5.internal.services.PageResponseRendererImpl.renderPageResponse(PageResponseRendererImpl.java:64)
        at $PageResponseRenderer_954065d89dbf.renderPageResponse(Unknown Source)
        at 
org.apache.tapestry5.internal.services.DefaultRequestExceptionHandler.renderException(DefaultRequestExceptionHandler.java:261)
        at 
org.apache.tapestry5.internal.services.DefaultRequestExceptionHandler.handleRequestException(DefaultRequestExceptionHandler.java:144)
        at $RequestExceptionHandler_954065d89d7c.handleRequestException(Unknown 
Source)
        at 
org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:42)
        at $RequestHandler_954065d89d7e.service(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$3.service(TapestryModule.java:854)
        at $RequestHandler_954065d89d7e.service(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$2.service(TapestryModule.java:844)
        at $RequestHandler_954065d89d7e.service(Unknown Source)
        at 
org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:89)
        at $RequestHandler_954065d89d7e.service(Unknown Source)
        at 
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:105)
        at 
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:95)
        at 
org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:85)
        at 
org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:119)
        at $RequestHandler_954065d89d7e.service(Unknown Source)
        at $RequestHandler_954065d89d6d.service(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:255)
        at 
org.tynamo.resteasy.JSAPIRequestFilter.service(JSAPIRequestFilter.java:80)
        at $HttpServletRequestFilter_954065d89d6c.service(Unknown Source)
        at $HttpServletRequestHandler_954065d89d6f.service(Unknown Source)
        at 
org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:59)
        at $HttpServletRequestHandler_954065d89d6f.service(Unknown Source)
        at 
org.tynamo.resteasy.ResteasyRequestFilter.service(ResteasyRequestFilter.java:106)
        at $HttpServletRequestFilter_954065d89d6b.service(Unknown Source)
        at $HttpServletRequestHandler_954065d89d6f.service(Unknown Source)
        at 
org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
        at $HttpServletRequestFilter_954065d89d68.service(Unknown Source)
        at $HttpServletRequestHandler_954065d89d6f.service(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$1.service(TapestryModule.java:804)
        at $HttpServletRequestHandler_954065d89d6f.service(Unknown Source)
        at $HttpServletRequestHandler_954065d89d67.service(Unknown Source)
        at org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:166)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:127)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest(DevAppServerModulesFilter.java:366)
        at 
com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest(DevAppServerModulesFilter.java:349)
        at 
com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter(DevAppServerModulesFilter.java:116)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
        at 
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
        at 
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
        at 
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
        at 
com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:98)
        at 
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        at 
com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:491)
        at 
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        at org.mortbay.jetty.Server.handle(Server.java:326)
        at 
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
        at 
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
        at 
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
        at 
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException:
Failure reading parameter 'source' of component
core/ExceptionReport:loop_0: access denied
("java.lang.RuntimePermission" "modifyThreadGroup") [at
classpath:org/apache/tapestry5/corelib/pages/ExceptionReport.tml, line
110]
        at 
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$AbstractPhase.invoke(ComponentPageElementImpl.java:155)
        at 
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$SetupRenderPhase.render(ComponentPageElementImpl.java:183)
        at 
org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:79)
        ... 94 more
Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException:
Failure reading parameter 'source' of component
core/ExceptionReport:loop_0: access denied
("java.lang.RuntimePermission" "modifyThreadGroup") [at
classpath:org/apache/tapestry5/corelib/pages/ExceptionReport.tml, line
110]
        at 
org.apache.tapestry5.internal.transform.ParameterWorker$3$1.readFromBinding(ParameterWorker.java:268)
        at 
org.apache.tapestry5.internal.transform.ParameterWorker$3$1.get(ParameterWorker.java:381)
        at 
org.apache.tapestry5.corelib.components.Loop.conduit_get_source(Loop.java)
        at org.apache.tapestry5.corelib.components.Loop.setup(Loop.java:324)
        at org.apache.tapestry5.corelib.components.Loop.setupRender(Loop.java)
        at 
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$SetupRenderPhase.invokeComponent(ComponentPageElementImpl.java:176)
        at 
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$AbstractPhase.invoke(ComponentPageElementImpl.java:135)
        ... 96 more
Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException:
access denied ("java.lang.RuntimePermission" "modifyThreadGroup") [at
classpath:org/apache/tapestry5/corelib/pages/ExceptionReport.tml, line
110]
        at 
org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:67)
        at 
org.apache.tapestry5.internal.transform.ParameterWorker$3$1.readFromBinding(ParameterWorker.java:263)
        ... 102 more
Caused by: java.security.AccessControlException: access denied
("java.lang.RuntimePermission" "modifyThreadGroup")
        at 
java.security.AccessControlContext.checkPermission(AccessControlContext.java:372)
        at 
java.security.AccessController.checkPermission(AccessController.java:559)
        at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
        at 
com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkPermission(DevAppServerFactory.java:429)
        at 
com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkAccess(DevAppServerFactory.java:454)
        at java.lang.ThreadGroup.checkAccess(ThreadGroup.java:315)
        at java.lang.ThreadGroup.getParent(ThreadGroup.java:167)
        at 
org.apache.tapestry5.internal.TapestryInternalUtils.getAllThreads(TapestryInternalUtils.java:597)
        at 
org.apache.tapestry5.corelib.pages.ExceptionReport.getThreads(ExceptionReport.java:213)
        at $InternalPropertyConduit_954065d89f01.get(Unknown Source)
        at 
org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:63)
        ... 103 more

Caused by:

org.apache.tapestry5.ioc.internal.util.TapestryException: Failure
reading parameter 'source' of component core/ExceptionReport:loop_0:
access denied ("java.lang.RuntimePermission" "modifyThreadGroup") [at
classpath:org/apache/tapestry5/corelib/pages/ExceptionReport.tml, line
110]
        at 
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$AbstractPhase.invoke(ComponentPageElementImpl.java:155)
        at 
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$SetupRenderPhase.render(ComponentPageElementImpl.java:183)
        at 
org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:79)
        at 
org.apache.tapestry5.internal.services.PageRenderQueueImpl.render(PageRenderQueueImpl.java:114)
        at $PageRenderQueue_954065d89e49.render(Unknown Source)
        at $PageRenderQueue_954065d89e48.render(Unknown Source)
        at 
org.apache.tapestry5.internal.services.MarkupRendererTerminator.renderMarkup(MarkupRendererTerminator.java:37)
        at 
org.apache.tapestry5.internal.services.PageNameMetaInjector.renderMarkup(PageNameMetaInjector.java:41)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$29.renderMarkup(TapestryModule.java:1810)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$28.renderMarkup(TapestryModule.java:1800)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$27.renderMarkup(TapestryModule.java:1784)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$26.renderMarkup(TapestryModule.java:1768)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.internal.services.javascript.AddBrowserCompatibilityStyles.renderMarkup(AddBrowserCompatibilityStyles.java:45)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.internal.services.javascript.ConfigureHTMLElementFilter.renderMarkup(ConfigureHTMLElementFilter.java:45)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.modules.JavaScriptModule$1.renderMarkup(JavaScriptModule.java:259)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$25.renderMarkup(TapestryModule.java:1751)
        at $MarkupRenderer_954065d89e4c.renderMarkup(Unknown Source)
        at $MarkupRenderer_954065d89e47.renderMarkup(Unknown Source)
        at 
org.apache.tapestry5.internal.services.PageMarkupRendererImpl.renderPageMarkup(PageMarkupRendererImpl.java:47)
        at $PageMarkupRenderer_954065d89e45.renderPageMarkup(Unknown Source)
        at 
org.apache.tapestry5.internal.services.PageResponseRendererImpl.renderPageResponse(PageResponseRendererImpl.java:64)
        at $PageResponseRenderer_954065d89dbf.renderPageResponse(Unknown Source)
        at 
org.apache.tapestry5.internal.services.DefaultRequestExceptionHandler.renderException(DefaultRequestExceptionHandler.java:261)
        at 
org.apache.tapestry5.internal.services.DefaultRequestExceptionHandler.handleRequestException(DefaultRequestExceptionHandler.java:144)
        at $RequestExceptionHandler_954065d89d7c.handleRequestException(Unknown 
Source)
        at 
org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:42)
        at $RequestHandler_954065d89d7e.service(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$3.service(TapestryModule.java:854)
        at $RequestHandler_954065d89d7e.service(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$2.service(TapestryModule.java:844)
        at $RequestHandler_954065d89d7e.service(Unknown Source)
        at 
org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:89)
        at $RequestHandler_954065d89d7e.service(Unknown Source)
        at 
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:105)
        at 
org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:95)
        at 
org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:85)
        at 
org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:119)
        at $RequestHandler_954065d89d7e.service(Unknown Source)
        at $RequestHandler_954065d89d6d.service(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:255)
        at 
org.tynamo.resteasy.JSAPIRequestFilter.service(JSAPIRequestFilter.java:80)
        at $HttpServletRequestFilter_954065d89d6c.service(Unknown Source)
        at $HttpServletRequestHandler_954065d89d6f.service(Unknown Source)
        at 
org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:59)
        at $HttpServletRequestHandler_954065d89d6f.service(Unknown Source)
        at 
org.tynamo.resteasy.ResteasyRequestFilter.service(ResteasyRequestFilter.java:106)
        at $HttpServletRequestFilter_954065d89d6b.service(Unknown Source)
        at $HttpServletRequestHandler_954065d89d6f.service(Unknown Source)
        at 
org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
        at $HttpServletRequestFilter_954065d89d68.service(Unknown Source)
        at $HttpServletRequestHandler_954065d89d6f.service(Unknown Source)
        at 
org.apache.tapestry5.modules.TapestryModule$1.service(TapestryModule.java:804)
        at $HttpServletRequestHandler_954065d89d6f.service(Unknown Source)
        at $HttpServletRequestHandler_954065d89d67.service(Unknown Source)
        at org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:166)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:127)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest(DevAppServerModulesFilter.java:366)
        at 
com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest(DevAppServerModulesFilter.java:349)
        at 
com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter(DevAppServerModulesFilter.java:116)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at 
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
        at 
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
        at 
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
        at 
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
        at 
com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:98)
        at 
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        at 
com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:491)
        at 
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        at org.mortbay.jetty.Server.handle(Server.java:326)
        at 
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
        at 
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
        at 
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
        at 
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException:
Failure reading parameter 'source' of component
core/ExceptionReport:loop_0: access denied
("java.lang.RuntimePermission" "modifyThreadGroup") [at
classpath:org/apache/tapestry5/corelib/pages/ExceptionReport.tml, line
110]
        at 
org.apache.tapestry5.internal.transform.ParameterWorker$3$1.readFromBinding(ParameterWorker.java:268)
        at 
org.apache.tapestry5.internal.transform.ParameterWorker$3$1.get(ParameterWorker.java:381)
        at 
org.apache.tapestry5.corelib.components.Loop.conduit_get_source(Loop.java)
        at org.apache.tapestry5.corelib.components.Loop.setup(Loop.java:324)
        at org.apache.tapestry5.corelib.components.Loop.setupRender(Loop.java)
        at 
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$SetupRenderPhase.invokeComponent(ComponentPageElementImpl.java:176)
        at 
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$AbstractPhase.invoke(ComponentPageElementImpl.java:135)
        ... 96 more
Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException:
access denied ("java.lang.RuntimePermission" "modifyThreadGroup") [at
classpath:org/apache/tapestry5/corelib/pages/ExceptionReport.tml, line
110]
        at 
org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:67)
        at 
org.apache.tapestry5.internal.transform.ParameterWorker$3$1.readFromBinding(ParameterWorker.java:263)
        ... 102 more


Caused by: java.security.AccessControlException: access denied
("java.lang.RuntimePermission" "modifyThreadGroup")
        at 
java.security.AccessControlContext.checkPermission(AccessControlContext.java:372)
        at 
java.security.AccessController.checkPermission(AccessController.java:559)
        at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)
        at 
com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkPermission(DevAppServerFactory.java:429)
        at 
com.google.appengine.tools.development.DevAppServerFactory$CustomSecurityManager.checkAccess(DevAppServerFactory.java:454)
        at java.lang.ThreadGroup.checkAccess(ThreadGroup.java:315)
        at java.lang.ThreadGroup.getParent(ThreadGroup.java:167)
        at 
org.apache.tapestry5.internal.TapestryInternalUtils.getAllThreads(TapestryInternalUtils.java:597)
        at 
org.apache.tapestry5.corelib.pages.ExceptionReport.getThreads(ExceptionReport.java:213)
        at $InternalPropertyConduit_954065d89f01.get(Unknown Source)
        at 
org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:63)

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