I have an AMD64 CPU and used the sfcure01.sys provided in sfcure03_x64.zip from itwins.
When starting sfcure the following error occurs: "System Error 1 No correct function"
itwins writes in ther txt-file to do the following:
Edit boot.ini file that you can find in C: root.
Change
/NoExecute=OptIn /FastDetect
to
/Execute=OptIn /FastDetect
Reboot your PC and relaunch !start.bat

I did that, but the error keeps popping up!