PMDG 737-800 "Center of Gravity CG" problem

[SWAFO]

For most people, my file should work. It worked for me! Make sure that you keep a balanced aircraft load (there's a CG marker in the
middle of the loading screen, try to keep it near the center). Don't load lots of PAX up front or in the back, and the same goes for cargo...
try and balance it all out. You shouldn't have any problems (I haven't since I started using my payload model).

Also, you'll notice that the PMDG message doesn't really do anything. It's just annoying. I've found that I can still fly, and lift off at normal
speeds with it. It usually goes away right after takeoff too.