re: crash in the carbon event loop

Here is the backtrace of my crash:

#0	0x005f1c28 in GC_free at malloc.c:411
#1	0x91b0e768 in HIObject::HandleClassHIObjectEvent
#2	0x91b0e5d3 in HIObject::EventHook
#3	0x91b0e13d in DispatchEventToHandlers
#4	0x91b0d57b in SendEventToEventTargetInternal
#5	0x91b0d3e0 in SendEventToEventTargetWithOptions
#6	0x91b4ce22 in HIObject::Destruct
#7	0x91251516 in _CFRelease
#8	0x91c5f7e2 in MenuData::~MenuData
#9	0x91b0e768 in HIObject::HandleClassHIObjectEvent
#10	0x91b0e5d3 in HIObject::EventHook
#11	0x91b0e13d in DispatchEventToHandlers
#12	0x91b0d57b in SendEventToEventTargetInternal
#13	0x91b0d3e0 in SendEventToEventTargetWithOptions
#14	0x91b4ce22 in HIObject::Destruct
#15	0x91251516 in _CFRelease
#16	0x91b8cdfa in ReleaseMenu
#17	0x91b8bf5e in SystemAppMenuHandler
#18	0x91b0e13d in DispatchEventToHandlers
#19	0x91b0d57b in SendEventToEventTargetInternal
#20	0x91b0d3e0 in SendEventToEventTargetWithOptions
#21	0x91b51fb9 in SendMenuPopulate
#22	0x91b51e73 in PopulateMenu
#23	0x91b514dc in Check1MenuForKeyEvent
#24	0x91b50cda in CheckMenusForKeyEvent
#25	0x91b50939 in _IsMenuKeyEvent
#26	0x91b50685 in IsMenuKeyEvent
#27	0x91c08a52 in HIMenuBar::HandleKeyboardEvent
#28	0x91b0e649 in HIObject::EventHook
#29	0x91b0e13d in DispatchEventToHandlers
#30	0x91b0d57b in SendEventToEventTargetInternal
#31	0x91b0d3e0 in SendEventToEventTargetWithOptions
#32	0x91b3c307 in ToolboxEventDispatcherHandler
#33	0x91b0e4f6 in DispatchEventToHandlers
#34	0x91b0d57b in SendEventToEventTargetInternal
#35	0x91b29ecc in SendEventToEventTarget

last call of my code from here
#36	0x00178c5a in AGLWindowManager::processEvents at macosx_agl.mm:1089
#37	0x0017610b in WindowManager::mainLoop at wm_common.cpp:33
#38	0x0004e85d in main_layer_load at emitter.cpp:5378
#39	0x00006b6c in main at main.cpp:313

here is the code of the function processing events :

int AGLWindowManager::processEvents(void)
{
   //RunApplicationEventLoop();
	
	
   EventRef event;
   EventRecord oldStyleMacEvent;
   EventTargetRef eventDispatcher = GetEventDispatcherTarget();

   while (ReceiveNextEvent(0, NULL, 0.0, TRUE, &event)==noErr) {
      if (ConvertEventRefToEventRecord(event, &oldStyleMacEvent)) {
         if (oldStyleMacEvent.what==kHighLevelEvent) {
            AEProcessAppleEvent(&oldStyleMacEvent);
         }
      }
	  
      SendEventToEventTarget(event, eventDispatcher);
      //ReleaseEvent(event);
   }

   return(0);
}