I'm seeing installation failure as well. Despite threads claiming issues have been resolved.
Installer platform: Win64
Target:
rpi3
Version 0.4.6
Branch: aosp-7.1
release: 01.12.2017
Software downloads to installation program, then writes to known good SD card (SD card works with Raspbian). System attempts to boot, but halts at "starting kernel" message.
Is there a new release coming soon? Is it possible to get the installer to download and write an older release?