I will keep this as short as possible. Running fsx on a windows 8 platform with a windows 7 compatibility setting. Was working ok until I added megascenery los vegas... is when the trouble began. I uninstalled the scenery package and my sim has not been the same since. Now when I try to run the sim, it just gives me error msgs. I tried with the advice of a fellow simmer to add uiautomationcore.dll.but this did not work either. My windows is a 64 bit os but the sim is a 32 bit program. Anyone with a working knowledge of countering this issue is most welcome to help!