Warning FSX did not shut down correctly

I have trawled through the forum on this, although this problem has been mentioned, has there ever been a fix for it? I have had the programme for about six months now and never got it to work. Despite uninstalling and reinstalling tried all sorts no joy. it plays the music to say its installed then the red box pops up. Any ideas please guys?

If you have already followed the suggestions in the other posts then not sure what else i can add. Did you install the programme as administrator and with your anti virus off and user account t controls set to zero? Are your running flight sim as administrator?

I have also done the same. Never got it to work, tried uninstalling every thing. FSX. UT2. And UK2000 Scenery. and clean reinstalled everything again. Though this time FSX Successfully registered but then reverted to the demo version, said something like calling Microsoft to activate the software. Unbelievable. I got fed up with-it. Uninstalled FSX and bought the steam version which works great, then reinstalled UT2 exactly according to the instructions. Hey the same think happened plays the music along with the red popup box.UT2 Seems to run ok on its own I configured all the gismos then minimised it, starting FSX the red box pops up. So I closed it, I don't know if this was just a fluke but some moving aircraft did appear with UT2 Minimised. Or it could have been UK2000 Scenery.I am guessing that maybe a few others here are having the same problem too. Or maybe someone could suggest a similar programme that would do the same thing that works.