500 Internal Server Error on admin page

[Doe]

Hi, I am having a 500 Internal Server Error on admin page so I can't access the admin area to change anything, I could at first, and I didn't really change anything this day that it started, I was just adding a product, but it worked after that, and then after I was just looking through different php files but not changing anything, It suddenly won't let me in to the admin,
Here is the error log that was found:
[Wed Oct 17 07:49:41 2007] [error] [client 71.170.220.250] malformed header from script. Bad header=Content-type: index.php

I don't even think I changed the index file between when it was working and when it broke, I even just tried to change the index file back to the default, and it didn't work.

Thanks,

[DrByte]

http://www.zen-cart.com/wiki/index.p...Obscure_Issues