I recently noticed that the screenshots in the Store for the US scenery update show a very detailed versio of Hoover Dam. But the dam does not show up in my sim -- nothing at all where the dam should be. Also, ne detail at all in nearby Las Vegas, such as lights on "the Strip." The Store assures me that I have the US scenery installed.
I am also missing many buildings in NYC, including almost all south of 34th Street.
Do I need to do a clean reinstall, or is there a less drastic solution?