3
If you honked up the theme (and it seems you just might have
) & it won't let you get to /user.php, you can use phpmyadmin or any MySQL frontend to change the theme back to default.
in yourdbprefix_config table look for an entry where conf_name is theme_set. change the value to Quote:
and it will revert you to the default theme so that you can log in again.
Advice:
whenever you are changing a theme you aren't positive will work... leave the admin open in it's own browser and open the homepage in a new browser.. if the new theme is hosed, you can just change it back in your still open admin browser window.