Q&A Issue unable to vote up answers and Edit Settings Page

Hey guys,

I am having problems with the Q&A Plugin:

1. Users are unable to vote up/down questions and answers

2. Unable to mark "best answers"

3. I am also unable to edit the settings page.

I am pretty sure I have all the settings correctly because it is working very good before.

I also did a screencast below to better explain my problem: