Using T5.0.14 Just found this after a couple hours.
Case: User Logs on login page, user ASO created Page with Grid is rendered, using inPlace, all is well. User session times out, or logs out in another window. (doesn't matter which) User clicks on a sort button on the Grid, and the page hosting the grid requires the user session. We expect that the page with a grid would allow redirection to the login page, but when using inPlace, we get a " Page must be specified before root render command." error when an onActivate or onException page redirection occurs. We actually get the same page, with no changes. [DEBUG] BaseReportPage [ EXIT] onActivate [EMAIL PROTECTED] [DEBUG] SOCMPPage Dispatch event: ComponentEvent[exception from (self)] [INFO] TimingFilter Request time: 15 ms [ERROR] RequestExceptionHandler Processing of request failed with uncaught exception: Page must be specified before root render command. org.apache.tapestry5.runtime.ComponentEventException: Page must be specified before root render command. at org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1054) at org.apache.tapestry5.internal.services.AjaxComponentEventRequestHandler.handle(AjaxComponentEventRequestHandler.java:68) at $ComponentEventRequestHandler_11c9acea066.handle($ComponentEventRequestHandler_11c9acea066.java) at org.apache.tapestry5.internal.services.AjaxFilter.handle(AjaxFilter.java:42) at $ComponentEventRequestHandler_11c9acea067.handle($ComponentEventRequestHandler_11c9acea067.java) at org.apache.tapestry5.services.TapestryModule$38.handle(TapestryModule.java:1974) at $ComponentEventRequestHandler_11c9acea067.handle($ComponentEventRequestHandler_11c9acea067.java) at $ComponentEventRequestHandler_11c9ace9e6d.handle($ComponentEventRequestHandler_11c9ace9e6d.java) at org.apache.tapestry5.internal.services.ComponentEventDispatcher.dispatch(ComponentEventDispatcher.java:130) at $Dispatcher_11c9ace9e6f.dispatch($Dispatcher_11c9ace9e6f.java) at $Dispatcher_11c9ace9e60.dispatch($Dispatcher_11c9ace9e60.java) at org.apache.tapestry5.services.TapestryModule$13.service(TapestryModule.java:953) ...