Hey, thanks for excellent software. Tried figuring this out myself in a few ways, but haven't cracked it yet:

macOS 10.13, both YACReader and YACReaderLibrary are in my Applications folder. When I double-click on a comic in the library, I get this error: "YACReader not found, YACReader should be installed in the same folder as YACReaderLibrary." Which it is.

Possibly related: YACReader does not show up as an option when I control-click on a CBR or CBZ file. I have to go to Open With... show all applications, and then I can select it. It's apparently not registered with those file extensions? But it does work to do this to set the defaults—so now I can double-click in the Finder to open, but still can't do it from the library.

Try using the current release canditate for 9.0.0, available here:

www.yacreader.com/forum/testers/1059-yacreader-9-0-0

If the problem happens there too report bac