Your comments
Are there currently any other options other than "[[FOLDER]]"? What I'm looking to do it if I don't have a header image to make it just say the name of the current folder's name. I.E. my Star Wars folder says "Star Wars"... Because what I'd like to do is create a generic enough one that it can be used for every folder rather than having a custom one in every folder.
I really like this theme, thank you very much for creating it!
Him adding the read/unread is already a planned feature - http://ubooquity.userecho.com/topic/623670-write-read-states-to-metadata-files-comic-and-books-alike/
Makes sense to also be able to manually set it.
I can't speak to 100% like Tom can. But Ubooquity currently doesn't store a read/unread status on the comics, so I'm guessing you mean in Challenger Viewer? Perhaps asking their support may be more useful, since it is probably stored in the app rather than in ubooquity.
I personally would like the option to preload a configurable amount. Say, cache server side 5 pages around the current page (both previous and next pages) and then have javascript preload the next page or 2 into the client side.
Customer support service by UserEcho
Adding a comment here, I had the same issue on Chrome for Windows and clearing my browser cache corrected it!