Can't add prefixes?

[Xerixe]

Hey, I'm wondering why I can't add any prefix.
When i do, even the name shows up as blank.
And if i tick it and click edit prefixes it shows a message :
No Prefix Selected or something like that.
Anyone knows why?

[HMBeaty]

Can you post a screenshot of how you have your prefixes set up in the AdminCP? I think that may be where your problem is, but I'd have to see to know

[Xerixe]

Thanks for the quick reply
First :

http://img37.imageshack.us/img37/6724/asdbnm.jpg

Second :

http://img44.imageshack.us/img44/3681/asd1j.jpg

[HMBeaty]

Have you tried entering anything other than "1" for the "Prefix Set ID"? For example, try test_prefix_set

Also, in the second image, where it says "[Add Prefix]" you should be able to add your prefixes to that set

[Xerixe]

I know i can add prefix
But it doesn't show the name.
And yea i did try letters.

[HMBeaty]

Try disabling your modifications one by one to see if you have a modification thats affecting it. If that still doesn't work, try reuploading your vBulletin files

[Xerixe]

I did.
Is it the database?