[WorldGuard] Invincible problem! [Need help!]

So I wanted Invincible on in my main spawn world. And then I noticed this happened

So I tried taking the flag invincible off. But it still stayed like this. In every world! Even when I kill my self via a command it still stays like that. Please help!

Edit:
List of plugins: (If it helps)
WorldEdit
PerWorldPlugins
ColoredSigns
spawn
FlyMode
Vault
PlotMe
PermissionsEx
Multiverse-Core
WorldGuard
bChatManager
HeadHunter
Multiverse-Portals
MagicSigbs
Multiverse-Inventories

Please anyone I even tried removing the plugin it still does the same thing!

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

This doesn't seem like a problem with plugins, it seems that your client itself is affected. Try reinstalling?

 

It is not a client problem everyone joining the server or had joined before gets this now... I tried to reinstall even though nothing changed.

EDIT: This is a very big problem, I have used 1 month to set this Server up. I really need some information from people

Anyone? Please! I can't go away from this post without it being solved. Redoing every plugin config again is not an option. I do not have time for that!