I just released a new version of BiblioCraft for Minecraft 1.12.0. This version fixes the framing sheet recipe which wasn’t working correctly in the previous version and most importantly updates to work on the latest forge. It was announced that tomorrow, June 28th, the recommended build of forge will come out and this version of BiblioCraft should be compatible with that version, as well as the current newest version of forge at the time of this writing. There were some breaking changes between this version of forge and the version of forge I used for BiblioCraft v2.4.1 so expect crashes if you mismatch and older version of forge or older BiblioCraft versions with the newer stuff.
Anyway, head on over to the downloads page to grab a copy, or head over to Curseforge to grab a copy if you prefer and as always, Enjoy!