I also had major problems with the Windows 10 Pro creator update #1709.

When I updated as required by windows the desktop icons for BIAB and Realband disappeared and could not be reinstated via the normal right click/view on the desktop.

I managed to create a new icon for BIAB but it would not load because the windows 'preparing to install' window appeared behind it and that was that. I tried many things including a question on this forum, and online support with PG Music, but nothing worked to get BIAB to load.

I then reverted Windows 10 Pro to the previous edition, reinstalled BIAB and it now works.

I will not try the creator update again but instead will regress to Win 10 Home edition because I do not want to deal with unknown compatibility issues with 10 Pro.

Having said all that, BIAB is fantastic for creating backing tracks for my duo performances. Previously I used iReal Pro on my iPad but BIAB is in another league.