Traceback (most recent call last): File "/opt/Nqa-Audiobook-player/nqaap.py", line 26, in <module> nqaap_gtk.run() File "/home/opt/Nqa-Audiobook-player/nqaap_gtk.py", line 23, in run controller = Player(ui = gui) File "/home/opt/Nqa-Audiobook-player/Player.py", line 29, in __init__ self.load_books_path(constants._default_book_path_ ) File "/home/opt/Nqa-Audiobook-player/Player.py", line 51, in load_books_path self.set_book(bookPath) File "/home/opt/Nqa-Audiobook-player/Player.py", line 72, in set_book chapter_num File "/home/opt/Nqa-Audiobook-player/Audiobook.py", line 30, in __init__ raise Exception("Unknown chapter set") Exception: Unknown chapter set