Blank page, MySQL Database Error?

[MeinKat]

ohmygoodnessohmygoodnessohmygoodness

I fixed it!! Well, sort of. The index.php is the only page that'll show up, the rest are either Error 404's or blank.

When I click login, the URL will show mysite.com/login instead of mysite.com/login.php, thus resulting in the Error 404, and then when I manually type in /login.php, it'll show up blank.

I'll see if I can fix that myself, but help would be great!
However, I'm glad to see the front page working :DDD


Here is my website using the Mysidia script:
Kyandii

And here is the other one using code I found off of the internet, there's so many errors though:
Kyandii World