No Longer Receiving Message Notifications on Lock Screen
Android 4.3 has protection by default to disallow Lock Screen Widgets:



Firstly you need to go to Settings &gt; My Device &gt; Lock Screen as above and enable "Multiple Widgets" 

You can change the SMS notifications in the SMS app > Settings > Notifications

As an alternative for anyone interested I would recommend Dash Clock lock screen Widget 

This is a HIGHLY customisable Lock Screen Widget. You can have SMS/Missed Calls/Stardate (seriously)/Hangouts/Battery and lots more via extensions. You can customise the look and feel of the clock to be JellyBean, KitKat etc too!