everything works fine except can't open any content under admin-configuration?

[annie_eos]

i just installed zen cart 1.3.9b and everything works fine. However, when i under admin, i can't open any page under the configuration section. Does anyone have any suggestion about why?

I didn't change anything and the SQL is an empty one before the installation.

click admin-configuration-My store (or anything else) will show message:

Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, xxxx 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.


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Apache/2.0.63 (Unix) mod_ssl/2.0.63 OpenSSL/0.9.8e-fips-rhel5 DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 mod_perl/2.0.4 Perl/v5.8.8 Server at xxx Port 80