Dang, thanks for reporting in (and for the nice words). I think I have the bug figured out, but just to double check, do you remember which part of the game that happened in?
Or if you have the time, could you check the log from %localappdata%low\Scrawny\Single Core Detective? I'd wager there's a NullReferenceException in there, about 20 rows from the top. If so, the next line should read something like "at DialogueManager.StartDialogue blah blah", that would help me out a bunch