THIS WORKS
First mount image with DT, then run YASU, now copy "Dat3.cab" from image to desktop, while Dat3.cab is copying wait about 3 seconds, then click play. This seems to work for everyone.
Afterwards just delete Dat3.cab from desktop.
You should only have to do this once, after that UFO al will run everytime without the copying of the Dat3.bat.
Dont ask me why it works but it does.