Please help! i can't setting these menus!

[Pwn Kyuubi]

I cant access to Features and Options/security and moderation/modifications

when i clic them only shows me a white page. What can i do??? 

language spanish_es, blackrain theme.

[N3RVE]

Hello Pwn Kyuubi,
Do you have any mods installed or manual source code changes?
Can you backup and replace ./Sources/modsettings.php to see if that helps?

-[n3rve]