Do you confirm you still see the "Trial period for KLAX has started", even if there's no scenery ? If this is the case, then I'm sorry, the only possible explanation is that you have the KLAX_OBJ.BGL from Ray Smith installed.
This, or you Uninstalled KLAX in the wrong way, by removing files manually, and that wouldn't work too, you must run the proper Uninstaller from the Windows Control Panel. To Undo this, reinstall KLAX and Uninstall it again, using the Add/Remove Programs in the Windows Control Panel.