Getting "Selected Mac OS X Installer is incomplete" When Running UniBeast

[Theodorics]

It's the correct file.
Once you have downloaded the file and check it in your Applications folder it's 5.23 GB

It's in the Applications folder, says it's 22.7 MB

 

[Jamesbond007]

It's in the Applications folder, says it's 22.7 MB

https://support.apple.com/kb/HT201372

There is a sentence in the above support document : "If you're downloading macOS High Sierra, use a Mac with High Sierra, Sierra 10.12.5 or later, or El Capitan 10.11.6."

So if you try to download High Sierra from a Mac or hackintosh that is NOT running the required operating systems, then it is quite possible you won't be able to download the full installer. I saw this as well when I tried to download from my 2012 Mac mini Server that is running Mavericks, and what I got was the small file like you.

Either find a Mac or hackintosh running the above operating systems, or use the method in this thread to generate the full installer.

 

[BreBo]

It's in the Applications folder, says it's 22.7 MB

See Fix/solution for "Selected Mac OS X Installer is incomplete"