Since loading 3.1 all hero images changed to random

[rod_barbee]

see this similar post

3.1 hero image mix up

After updating to 3.1 I see all the galleries that I had a Hero image set are now set to “Random” , the cover image is set to what was originally set for the Hero image and Hero image is now set to random??

you no longer need to choose the hero image by the list, you can use the album view in Publisher. click on the thumbnail of the image of choice. Click the Slide show image menu. set the hero image.
See Matt’s video:

Backlight 3.1 Released – The Turning Gate