I did what I always do when moving WordPress, guided by this article: http://codex.wordpress.org/Moving_WordPress
I had my site in mydomain.com/wp/
I changed it to mydomain.com in both "WordPress address (URI)" and "Site address (URL)" in Settings/General
And then I moved the files to mydomain.com/ using the ftp.
And everything turned white, with no error message or anything.
I also changed the permissions back to 0644 where they changed.
So I moved everything back to mydomain.com/wp/ but now I can't log in.
Anybody have suggestions what i can do now???