500 internal server error

[wendyait]

Hi, I have recently reinstalled joomla 1.5, now I get this message
Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, support@x10hosting.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2.2.15 (Unix) mod_ssl/2.2.15 OpenSSL/0.9.8e-fips-rhel5 mod_mono/2.6 mod_bwlimited/1.4 mod_auth_passthrough/2.1 Server at activ8ed.co.nz Port 80 when I go to http://activ8ed.co.nz/administrator/

 

[descalzo]

Make sure any index.php file has permissions 0755 or 0644 .

If that does not work, find any .htaccess files and if they have a line that starts

RewriteRule

make sure you have the line

RewriteBase /

at the top of the file.

You can also check the Error Log from the front page of the cPanel. I sometimes contains information.

 

[wendyait]

I have tried all these things but still get the same message.