Can't access some admin features when I'm logged in as admin

[insecure x blue]

Okay so early this morning my gallery was fine. I had no problem uploading pics and what not via the batch add option. So a little while ago I decided to add some more pics and I get a Internal 500 error page when trying to add any pics so I decided to click config. link to see if i can check things out and even though I'm logged in as a admin I get "You don't have permission to access this page." So I click log in and it says "You are already logged in ! "

Can someone help me resolve these issues? Between last night I haven't done anything to the gallery but just only upload some images so I don't what happened to make this problems start.

[insecure x blue]

i forgot to include a link to the gallery and couldn't find a edit link so I'm replying to my post.

http://chasez-online.com/gallery

[Joachim Müller]

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