I have finally got my Epson V39 working, well sort of.
Under Scanner configuration there shows 2 entries:
DRIVER:
Imagescan The correct working one
Not configured: failed v39 installations.
When I try and delete the non-working(configured) one it comes up with Delete is not possible, it is only possible to edit a detected scanner. That entry will NOT let me run Image scan. I just need to get rid of, delete, trash etc