There's another way to fix it, and it gives you better Las Vegas buildings on the Strip than the default FSX or MegaScenery Strip. I use UTX USA, MegaSceneryX Las Vegas, FSDT KLAS, and the FSX GMAX Las Vegas scenery from the below site:
http://fs-x.world.coocan.jp/index.htmJapanese site, but easy to navigate and figure out. Scroll down the left pane of the site (after clicking on the FSX banner at the top of it) to get to the Vegas X v3.01 download.
In order for it to work, you MUST install it the following way:
1. Create a SEPARATE FOLDER for the scenery, and place the "scenery" and "texture" subfolders under it.
2. Go into the "scenery" subfolder, find the file called "STT1X.BGL" and RENAME it to "STT1X.BGL.DISABLED" This will prevent the Stratosphere Tower from having an "extra top" for it that looks like a flying saucer displayed in thin air near it.
3. ADD and LAYER the folder from number 1 above to the FSX Scenery Library ABOVE BOTH UTX USA and MegaScenery X Las Vegas (at a higher priority than them).
Enjoy the ride
FalconAF