Yes, I am getting an error too about the featherlight.css file missing from the assets directory. Any response to this?

Same issue. It's causing a little delay (web speed).

Another "same here" from me.

Idem !

Same here, I am trying to darken the background of the lightbox. In the process of tracking down the code to change I too noticed this file was missing which I am assuming is the place I need to make that change, and probably why the background isn't so dark in the first place.

*Edit*
I know from an issue with another Add-On that alerts from the support are not always getting though. I have messaged the developer directly and hopefully we will get a reply shortly.

Seems like i fixed it by going tohttp://noelboss.github.io/featherlight/... . Download it and place the featherlight.css file into the assets folder.

I patched this add-on. Along with other fixes, my version includes the missing featherlight.css.

Modifications:
- Fixed missing asset: featherlight.css
- Included navigation arrows and an X to close the lightbox
- Lightbox is the default template

The zip file is attached.

I am always available for custom coding and add-on modification. Email me: bobby AT channelmarkermedia.com </shameless_self_promotion>