Q&A plugin's ask page is not showing and failed to create answer

Hi I am a web developer and currently working for my client on http://checklistendenken.de/ML

At present I'm getting trouble to use the Q&A plugin as following-

1. http://checklistendenken.de/ML/wp-admin/post-new.php?post_type=answer
is showing nothing..

2.http://checklistendenken.de/ML/questions/ask is forwarding to 404 error page.

Please forward your answer to my email address at niloydhkbd@gmail.com so that I can fix these problems asap.

Hope to hear from you soon.