If it is your app, and you're using API, then it may be something that you did that it is just telling you about. If you only get it while shutting down something like that, then don't worry about it.

Go into your BIOS, and tell it to skip the fast-boot, and check the memory entirely. That should produce a mesage about bad memory, and you'd have to act accordingly. If you have a bad stick, then your RAM would be lower than what it should be.

Is it?