1.0 dan 1.5 geçerken hata aldım yardım lüütfen

[klinikvaka]

arkadaşlar 1.0 versiyonunu ftpden direk sildim yerine 1.5 yüklemeye çalıştım fakat önce mysgl hatası verdi sonra baya bi karıştırdım dosyalarla falan oynadım şimdi bu hatayı alıyorum


Internal Server Error

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Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2.0.63 (Unix) mod_ssl/2.0.63 OpenSSL/0.9.8e-fips-rhel5 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 Server at www.site.com Port 80

[Trabzonli]

Internal Server Error