As soon as I loaded into the new update, I ran to an unloaded cell (Wayne county bookstore) and loaded up on the new tailoring books. I was lucky enough to get beginners, read the book and BAM! the book disappeared and no exp boost. Did I miss something in the patch notes?
I do have several location mods installed, Fort Redford, New Denver, Bedford Falls and one or two more. Also Pillow's Many Spawns Project and Fillibuster Rhymes used cars beta.
*edit I should also say this is not a new game, and that I can read the other skill books just fine.