I can't get my simple instrument track to play from my keyboard

Hi all,
 
I'm trying a new post because I haven't had much luck with tech support
 
I'll start by saying this is a very basic tech issue, so it's really confusing me.  I would consider myself a relatively experienced Sonar X 3 user, having recorded hundreds of songs and released 2 full length CDs of material recorded entirely using Sonar, so I'm stumped as to why his is happening to me now.
 
In short, I can no longer get a simple instrument track to play from my midi keyboard.  Here's the context:
 
1. I use a Motu Ultralite sound card
2. I insert a simple instrument track, say a dimension Pro piano
3.  Playback through the Ultralite (of other songs/tracks) works fine
4.  When I play my midi keyboard the Ultralite indicates it is receiving that data/note
5.  The midi input for the track is set to Omni, but the meter in the track shows no input data when i play my Midi keyboard
6.  Ultralite is set up in preferences as being a midi input device (and as Is aid, playback works fine)
7.  To test if there was something wrong with the track itself, I drew some notes in the piano roll  and they play back fine as well.
 
So I think something is going wrong in the link between the Ultralite and the simple instrument track (perhaps it's the cable, but then playback wouldn't work if that was the problem would it?)
 
Any suggestions welcome.  As I said I've done it this way hundreds of times and never had an issue.
 
Thanks
Andrew
 
 
 

Maybe it's not sonar, but the ultralite

Ok, I sorted it out,
 
Turns out the Ultra lite was NOT ticked as a midi input device.  No idea how that happened, I would never deliberately do that, must have clicked it in error. Feel a bit silly
 
Thanks for your help