I've had it working fine. I bought an original FS Global pack (global terrain) and now my MegaScenery looks like this! I thought that reinstalling MegaScenery would cure it but obviously not!
What are the stats on your machine??? This could be anything from your video card to a bad installation of your O/S, to a bad install of FS.
in the opening screen of FS9 go to settings then to scenery library. in the library make sure that your megascenery is either at the top of the stack or at least above the FS global terrain. then when you are out of the megascenery area you will then be seeing fsglobal.
horrgakx, do what magafoot suggested. BTW, b4 you installed magascenery, how did the global mesh FS Global work? did that eat a lot your PC resources? I am very insterested in this package, like to hear some comments b4 i buy it