Ahh, sorry, I think I missed the error saying the file was too big.
https://www.dropbox.com/s/q72rzkfzpj33rri/Kat%20%28GuildRuins%29%20%2892faf63d-e2cc-426a-ae01-f65ff00723af%29%20%28769580815%29.7z?dl=0
Again, to reproduce the bug of him re-appearing *after* fracturing his soul and watching him leave, you need to leave the guild ruins (and enter the guild hall), then re-enter the guild ruins to where the dragon is, and he'll reappear.
As far as the bug with not being able to fracture his soul, I don't have any experience with that bug, sorry. When I played through it, I had a metaphysics of 7 (1 + 6 from party) and it wouldn't work (of course, because it's too low lol), so I used a consumable to bring it up to 9 and it worked.