Matteo on 19 Sep, 2017 08:06 AM
most of the changes are usually done to the MFReaderViewController/ReaderViewController and should be rather limited in scope (es. different names for the callbacks). If you can tell me the version you are using I'll try to be more precise and helpful.
If your version is still a pre-64 bit one, it might also use some external components (es. the thumbnails bar) that have been integrated in later versions.