I found a bug. After completing Noel's and Lily's side quests and all of the main quests in the journal except for the one that cannot be completed yet, entering the upper floor of the mansion in Rehling causes the game to crash.
That's a good find. There's a haywire autorun event there which triggers due to the switches that go on in Noel's and Lily's quests. I have patched this issue in v2.5.
