Installing Scalos Workbench replacement

I have followed The Green Amiga Alien guide (http://guide.abime.net) about
how to set up a hard disk & Install Workbench 3.1 in WinUAE.

I have followed their instructions and have my specifications exactly has they show, except that my WinUAE is newer. I am using WinUAE 1.4.4.

It all works fine until Chapter 9 - Installing Scalos Workbench replacement.
In the last step:
20. Click on Menu.pre to select and click on OK, something went wrong.

I can see "Menu.pre" and all the other menus in the list. Just as described in the picture. (Look at: http://guide.abime.net/wb3.1/chap9.htm)
But when I click OK, WinUAE reboots my AMIGA and i get a software failure.

The screen is black for a few seconds and the red colored text "Software Failure - Press left mouse button to continue - Error: 8000 000?" appears. There is a red flashing frame around the text. Then WinUAE starts my AMIGA emulation again.

Is there anybody else that have had this problem with Scalos?

Bit late, but yeah, I'm having this exact problem