Help with create a catalog

Hello,

For some reason, when I try to create a catalog I'm only given three format options: BIB, CSV, XML. Epub format is nowhere to be found.

See here: https://i.imgur.com/yUe6goU.png

Does anyone know why this is happening? :blink: I remember being able to do epub catalogs before. I have v.7.10 installed.