v3.1.6 and WP 4.1.1 = Can't Update Profile

Needed to log in and run some updates. Got all updated and current, then thought “Haven’t updated my password in awhile, think I’ll go do that”.

Edit My Profile > put new password in the two fields, scroll down aways….

Right where the Update Profile button should be, in it’s place is a couple blocks of PHP unhappiness:

“Warning: trim() expects parameter 1 to be string, object given in /path/to/domain.com/wp-includes/formatting.php on line 376”

and

“Catchable fatal error: Object of class WP_Error could not be converted to string in /path/to/domain.com/domain.com/wp-includes/formatting.php on line 379”.

Disabling all plugins and activating the default theme fixed it. Activating this plugin then brought it back.