Call to undefined function wp_get_current_user() in /wp-includes/capabilities.php on line 926
Isn’t that error message saying there’s a problem with a non-existing function within WordPress ? WPMU core?
/wp-includes/capabilities.php would seem to be a WP core file rather than a plugin file =
– What is the content of line 926 in that file?
– Where is it pointing to?
– What is it trying to call?
– Has function wp_get_current_user() been deprecated and replaced with a different function?
Vaguely, I remember having problems with that function in a downloaded theme, and when I checked, the function had been deprecated and replaced with a new name for essentially the same functionality. I can’t remember if it was specific to WP or to WPMU or to BuddyPress, but one of them caused the deprecation.
ALWAYS remember – The Codex is your friend. Search is your ally.