Ayuda VBseo

Miren, instale el vbseo, todo, bien, la cosa es qe no se xq, subi el htacces a la carpeta anterior al foro y puff, me desaparecio el portal, ahora cuando quiero entrar al portal me dice error noseqe y cuando quiero entrar a el panel de admin me dice lo mismo, creo qe era error de webmaster

dice:
pag: http://4sql.net/notify/1.php
Webserver Technical Notes Part 1:

Our comprehensive guide on web servers continues with an article on HTTP response codes. This articles covers the 404 or Not Found error message is an HTTP standard response code indicating that the client was able to communicate with the server but either the server could not find what was requested, or it was configured not to fulfill the request and did not reveal the reason why. 404 errors should not be confused with "server not found" or similar errors, in which a connection to the destination server could not be made at all. The requested URL was not found on this server.
When you encounter a 404 - File Not Found error it means that the page or resource that you are trying to load doesn't exist or cannot be found.
Now usually this means that you've followed a broken link but there can be other reasons why the page or resource isn't loading...