When starting the installer, after ~2-3 seconds, the system crashes to BSOD.
There are two assertions in debug.log which can probably indicate a problem:
(drivers/filesystems/fastfat/finfo.c:1443) IRP_MJ_QUERY_INFORMATION without FCB!
and directly in ntoskrnl:
(ntoskrnl/ex/resource.c:145) EX: resource: APCs still enabled before resource B4ADE53C acquire/release !!!
I already entered "bt" after crash.
Download link: http://download.geo.drweb.com/pub/drweb/windows/8.0/drweb-800-win-space.exe
Tested with gcfb8f97 (0.4.9-dev-886).