Hmm.. placing file didn't help, I'm still getting the same error, also placing some normal png file with the same name had no results either. I'll be trying the patched version, then,.
Considering your question, I did (through I played the game second time from the start with this update, but I didn't get to the Inquisitor visit before). It was probably a bit of luck and gamer's habit of looking/clicking everywhere - I found a "non-sanctioned" book in Ardina's room, and then I just run around the house. The only dead end I found was when I tried (for the sake of completion) to avoid kissing Dina in the cave. Also, I've rejected Abigail (it wouldn't be fair to poor girl, as I like Ardina more, so I didn't tried her routes (also, they seem to be basically incarnations of Stability and Change?)
P.s. Yess, the patch seems to be working, thanks!)