Okay - so I tried setting the index.php file back to 644, and my website is up and I can now log into admin. There is an error that I do not understand. In the message manager, it says "Error: cannot create sql dump of database during backup". What does this mean and how should I correct it? Also, don't I need to set the index.php file back to 777? When I do, the website goes away again. Thx!