The win32 awt DllMain has the following code. Because this code may be called at global destruction time, it is very unsafe to call back to vm at this time. The vm expect the dll does clean up at JNI_Unload(). At the global destruction time, the time may have been fully cleanup. So add if statement like
  if (reason == DLL_PROCESS_ATTACH) {
    ...
  }
So the code only take effect on global construction.

extern "C" BOOL APIENTRY DllMain(HANDLE hModule, DWORD ul_reason_for_call,
                                 LPVOID)
{
    TRY;

    AwtToolkit::GetInstance().SetModuleHandle(hModule);
    return TRUE;

    CATCH_BAD_ALLOC_RET(FALSE);
}