I found the issue. DF was initially installed on D:\. Autostart and manual shortcut also lead toD:\. DF however installed the update on C:\.
I changed the drive in autostart and the desktop shortcut and everything works fine. All custom scripts are running and that's fine.
I don't know if there was a "Layer-8" problem or if the upate installer just can't carry custom installation paths. It's up to you Keith to figure that out at will.
Thank you.