For some reason, today out of the blue my axiom 61 isn't sending notes to my synthstruments in sonar.  What might I have done?!  It's set up like it always has been in preferences.  I then tried different usb ports.  The synths play fine with their onscreen keyboards.  They're all set to midi omni as inputs.  (de)Nada.
 
I've also had crashing of old projects like some other people, but I think it has to do with the fact that I changed my interface.  That's the only thing I can think of.
 
I'm running most recent splat!

Have you tried running it into MIDIoX to check the board is actually sending MIDI and it's reaching the PC? Just wondering if the problem is Sonar specific.

I reset the board to defaults.  But I'll do some more investigating.  It might be the axiom.  The axiom only works on the F and G notes below middle C.  sounds fishy.

So get this, everything works fine in Pro Tools so I know it's only Sonar.  I go in mess around, end up turning off the audio engine and then restarting it,  then everything works.  Is this pretty common?  My old projects are still crashing sonar though.