I´ve tried to install Avast Free Antivirus on ReactOS 0.4.11-dev-908-g2037bab-x86-msvc-win-dbg with an Windows XP SP3 fltmgr.sys. For that I used the guide from CORE-14157 (Only the fltmgr part). Before the installation of Avast was done, the System crashed. After a reboot an error occurred in Freeloader v3.0 (the error code is 0x0d). The Error is an "General Protection Fault". I´ve added a Picture of the error screen, the VBox.log from the Test VM and a Picture of the VM Configuration. With the ReactOS fltmgr.sys on the Image of ReactOS happend the same, except in this case ReactOS crashes with an BSoD.
(Edit) After some Tests with another Version I Tried it without the Intel Lan driver and only the Installation fails.