YacReader Library Giving Unknown Error

I just updated my library (have been using this daily since February), and now, when I open the app, I get this pop-up:


When I click "OK," The library window opens, but my library is grayed out. The library drive is still mounted, and all the files and folders still exist on the drive.

I tried deleting the YacReader folder in Application Support, and re-added the library, but I still get the same error. Any fix for this?

Thanks!

Where is exactly the library (external drive, network share…)? I think the app can’t open the database for some reason…

It’s on an SD Card. Where does the database usually exist, and what is the file name? I may be able to get a backup. If I reimport my library, will I lose all my metadata and tags?

The db is in the same folder your content is. If you create a library in /MyComics the app creates a folder /MyComics/.yacreaderlibrary with all the files needed…So no, metadata is not lost unless that folder is deleted.