On any user field update for some users I get :
Catchable fatal error: Object of class stdClass could not be converted to string in ..../wp-includes/wp-db.php on line 429
I am having this problem when users try to update their passwords or when admin tries to update password or in fact any other user data. The users were "converted", ie: not created normally, but all other functioning seems fine.
Some converted users do not seem to have this problem. I would love a patch for this please as I have to reset their passwords manually and it is embarrassing that it does not work. Any ideas would be appreciated.
I think it relates to this, buy have no idea how to say update the user data to avoid this error, since it does not happen to all users.