When trying to install Quickmap Expansions, such as the Aerials V8_ExpansionSetup.exe, you may get this error:

Installation Haulted

Quickmap is not installed on this machine. The installer is
unable to continue.

This can be caused by either not having Quickmap installed on the machine that you’re running the installer from, or if you have the data stored on another machine, it’s possible that the elevated (administrator) account used to install Quickmap, doesn’t have access to the data directory.