I had this problem, but after restarting my phone i went into the system update setup again and repeated update. After that everything was fine. Try this.
I've tried a few things but all do not work well:
<boolean name="com.google.android.gm/com.google.android.gm.setup.AccountSetupFinalGmailSuggestions_is_dismissed" value="[B]true[/B]" /> <boolean name="com.android.settings/com.android.settings.notification.ZenSuggestionActivity_is_dismissed" value="[B]true[/B]" />