I have a bug report relating to the a0.15 release. In the section of code where Oswin responds to your questions, there are several dialogue trees that never trigger because the KeywordCheck function is passed an array rather than a nested array. For instance, asking about Benson being creepy gives generic Benson dialogue instead of the dialogue specific to calling Benson creepy. A search in that section of code for ([" should help you to find instances of this bug.