[SOLVED] Current theme (Atahualpa) broken
 

All of a sudden, my blog went blank. Under Manage Themes, I have the following:
Warning: array_keys() [function.array-keys]: The first argument should be an array in /usr/www/users/ellenf/pptblog/wordpress/wp-includes/theme.php on line 481

Warning: uksort() [function.uksort]: The argument should be an array in /usr/www/users/ellenf/pptblog/wordpress/wp-admin/themes.php on line 65

Warning: array_slice() expects parameter 1 to be array, boolean given in /usr/www/users/ellenf/pptblog/wordpress/wp-admin/themes.php on line 86

Manage Themes

The active theme is broken. Reverting to the default theme.
Current Theme
by

All of this theme’s files are located in .
Available Themes

Warning: array_keys() [function.array-keys]: The first argument should be an array in /usr/www/users/ellenf/pptblog/wordpress/wp-admin/themes.php on line 174

Warning: natcasesort() [function.natcasesort]: The argument should be an array in /usr/www/users/ellenf/pptblog/wordpress/wp-admin/themes.php on line 175

Please help!
Ellen

I was able to re-activate it, so I'm OK now.