I have emailed atik-cameras support about this, but also am posting here in case others have encountered this issue and know a solution. I installed the latest version of Atik Core Software suite (5.0.4.6), including AtikAir (running installer again says that AtikAir is already installed). However, AtikAir does not appear in the Windows start button program menu, nor is there an icon for it on the task bar as shown in the AtikAir guide. I went into the Programs (x86) folder in Windows, and found the file AtikAir.exe in the folder C:\Program Files (x86)\Atik Cameras\AtikAir. When I attempt to launch the AtikAir.exe file, nothing happens. I also attempted launching the AtikAirInstaller.exe file in the same location, and again, nothing happens. The Dusk and Dawn programs are installed and open with no problems.