Need urgent help! - Group Manager

So, Today I decided I'd add more prestige ranks to my server.

It was all fine untill I add those prestiges.
Now the server is completely funky.
Groupmanager is the issue right now.

I will rankup, and then get thrown back to A (the default group)
No clue why.

Example.


I ranked to 6-z then immediately moved me back to A.

Here is my config for GroupManager: http://pastebin.com/mT83Psf6

Groups.yml for "world": http://pastebin.com/Y70RYF1X


I'm absolutely stumped. Any help, ANY help at all is extremely appreciated. I have my players waiting on me, please help me if you can at all. Thanks so much!
- Jugga