error al intentar crear flags de tipo nodo

buenas. cuando intento crear banderitas con nodos me salen los siguientes errores:

1° Notice: Undefined offset: 4 en _menu_translate() (línea 787 de C:\xampp\htdocs\gcursosd\includes\menu.inc).
Notice: Undefined offset: 4 en _menu_translate() (línea 793 de C:\xampp\htdocs\gcursosd\includes\menu.inc).
este entiendo que accediendo al registro del archivo ubico esas lineas y en teoria deberia solventarlos pero en esas lineas no encuentro nada del offset....

2° al add la bandera del tipo nodo sale lo siguiente:

Additional uncaught exception thrown while handling exception.
Original

PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT s.lid, t.translation, s.version FROM {locales_source} s LEFT JOIN {locales_target} t ON s.lid = t.lid AND t.language = :language WHERE s.source = :source AND s.context = :context AND s.textgroup = 'default'; Array ( [:language] => es [:source] => Users may only unflag content if they have access to flag the content initially. Checking <em>authenticated user</em> will allow access for all logged-in users. [:context] => ) in locale() (line 720 of C:\xampp\htdocs\gcursosd\modules\locale\locale.module).
Additional

PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT * FROM {languages} ORDER BY weight ASC, name ASC; Array ( ) in language_list() (line 3014 of C:\xampp\htdocs\gcursosd\includes\bootstrap.inc).
Uncaught exception thrown in session handler.

PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT 1 AS expression FROM {sessions} sessions WHERE ( (sid = :db_condition_placeholder_0) AND (ssid = :db_condition_placeholder_1) ); Array ( [:db_condition_placeholder_0] => 1rszBEKqFukF86qGm65oSjsBXnS3LdD3cEaLQCiluX4 [:db_condition_placeholder_1] => ) in _drupal_session_write() (line 209 of C:\xampp\htdocs\gcursosd\includes\session.inc).
Uncaught exception thrown in shutdown function.

PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: DELETE FROM {semaphore} WHERE (value = :db_condition_placeholder_0) ; Array ( [:db_condition_placeholder_0] => 2853208155804cbe58589c2.85496065 ) in lock_release_all() (line 269 of C:\xampp\htdocs\gcursosd\includes\lock.inc).

Fatal error: Exception thrown without a stack frame in Unknown on line 0

Uso D7 y soy nueva en el asunto. atenta a sugerencias por favor SOS. por ahi lei que podia ser error con conditional field y de echo lo desactivo y salen 3errores menos. pero dejandolo activo sale toda esa chorrera... y a prte no me deja crear obviamente la bandera tipo nodo