At first, to get working the installer, I apply some registry hacks:
Change HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ProductOptions\ProductSuite from "Terminal Server" to empty value and ProductType from "ServerNT" to "WinNT";
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ReactOS\Settings\Version\ReportAsWorkstation from "0" to "1".
After these hacks the installer works correctly.
The antivirus installs correctly and doesn't cause any crash of the system, but he can't start some of their services. Reboot after installation doesn't solve the problem. Works only BullGuard scanning service and BullGuard update service. They works on autopilot, i.e. starts and terminates automatically. But when they are not launched, launching their is impossible. The start button in servman works, but they can't start anyway.
Other services of BullGuard doesn't work at all. After the first unsuccessful trying to launch the service(s) by the start button in servman, this button becames inactive for these services: BullGuard Benhavioural Detection, BullGuard cache service, BullGuard e-mail monitoring service, BullGuard Main service and BullGuard on-access service. Next launching of these services is impossible. All of them, except BullGuard Benhavioural Detection, uses svchost.exe for its launch.
Although the processes of these services are launched and visible in taskmgr, they does nothing and after trying to launch any of services from servman, after a few seconds there appears an error message that the main service is not running. I see in regedit that the all registry values are wroted correctly.
In XP with the same installation of antivirus all the above-mentioned services works correctly in automatic mode and the main window of program appears succesfully.
I used a web installer, which can be downloaded here: www.filehorse.com/download/file/uwvDd0DodL_RcLImLmb5U52XMw6OoelcgUn57zL61pE/