@jeroendanckers As @karenyoung1 mentioned, the Carousel view will only be available if the image links are set to “attachment page”, not to “media file”.
We’ve made that choice on purpose, as there are already other plugins that change the behaviour of single images when set to link to a media file.
I think that does mean going back and manually editing each image unless there is a plugin for that?
That’s correct. WordPress’ default is to link to attachment pages though, so hopefully you won’t have to edit too many posts!
It also appears to take the title from the image not from the caption so you need to make sure the title is what you want.
It should take both values if you’ve set both.
I hope this clarifies things a bit.