@BrokenZer0, Thank you for the quick response! I am in the process of completing a project very close to what yours was. After deleting the ei.cfg, none of the images are green. Did you have to integrate updates/drivers/etc one image at a time and then rebuild all 64 bit images? Were you able to select all images from inside the WIM Manager, using a single source such as Win 7 Ultimate x64 ISO, and then have Win Toolkit integrate them all? UPDATE FOR NEW USERS LIKE ME: After deleting the ei.cfg so all image options are white, after selecting all images, it integrates updates into all builds and works.