No sound from Sonar.

I have 2 computers I use Sonar on. One in my studio and one for work. When I use Sonar on my work machine it's mostly tinkering, but I will import my projects to it to mix and all that stuff, too.
 
I have no problems from my studio setup... The one I do have issues with I'm using a Line 6 Tone Port UX2 as the interface. It plays audio from every source I throw at it, even Sonar, BUT when I plug in a guitar no sound.
 
Just to be clear, input echo is on and the input is set to the correct send on the Tone Port. Anyone know what the problem could be?
 
It's odd that the sound works perfectly with Amplitube or BiasAMP.