It won't install on my 27" iMac (late 2015). It initially said it was a 1.66GB download, then rebooted to install, then quite quickly returned to the login screen and said it was unable to install the update. I tried once again, and this time it said it was a 1.18GB download. After rebooting it hung for around an hour on "calculating time remaining". I powered off/on again, and it booted to a grey screen with a little Union Flag in the top right hand corner and said something along the lines of not being able to find the OS. A further reboot seems to have returned it to 10.13.1 with everything working OK, phew.
Does anybody have a download link for the full 10.13.2 installer? I had a similar problem with the 10.13 Supplemental Update which was solved by installing from the full installer.
I had no problems with the 10.13 -> 10.13.1 installation...
EDIT:
Never mind - found the download:
https://support.apple.com/kb/DL1946?locale=en_GB
Hopefully this will work...