There is nothing inherent to the current game which causes an item with bookcase tuning to crash the game if it is placed in a slot. I just used Sims 4 Studio to make this default override for the stack of books and give it bookcase tuning. It does not cause the game to crash when it sits on a surface.
https://photos-4.dropbox.com/t/2/AADA5KPVplFN6ZmEb1DKdjaqIdgrMaLnD_hVXUtZi0N3qA/12/83260536/jpeg/32x32/1/1435435200/0/2/books.jpg/CPjo2ScgASACIAMgBCAFIAYgBygB/NDKORiR9h2Rabpm2_cad81VHNhUooT88KVLeMpaVCaY?size=1280x960&size_mode=2
I think the easiest way around the difficulty you're having with your item is to just re-do it. It took me all of about two minutes to make this one :)
