YACReaderLibraryServer is a version of YACReaderLibrary with no graphic user interface that can be used for serving comics to the iOS client of YACReader. One of the greatest additions to YACReader in the 8.5.0 relase is YACReaderLibraryServer. This tutorial is outdated, you should pick the code from using git and read the documentation that can be found in the YACReaderLibraryServer folder.