Try toggling offset mode.

Thanks for trying y'all!
 
I tried to clone it. There is definitely something wrong with that track and cloning perpetuates the issue.
 
Inserting an audio track and copying the WAV files got me to a point where the pan is working. 
 
Some processing between the X3 series of patches corrupted this track somehow. I brought it into X3 from an older SONAR project. Saved as a new X3 project and then started moving things around. The panning worked at one point and then went south. I thought it was a corrupted component of some sort.  
 
Toggling offset did nothing for me.
 
I can move on now. :) Thanks again y'all!

Strange, it made a big difference for me. When I opened the project there were ~ marks by the volume and the pan. Typing "O" changed the display values of volume from -5.1 to -0.8 and the pan from 100%L to 46%R. Also after typing "O" moving the pan slider worked as expected.

Typing "O" did fix things; kind of.
The track now pans, as the automation shows it should, however the pan "knob" does not move.

It pans manually as well.
HTH,
 
T

My results are the same as the others. It pans right but wont pan left.  After coping it to a new track it will pan both left and right.

All works normally for me without cloning anything once the Offset panning is removed. I was going to suggest that last night, but it didn't quite fit with the issue description, because even with an offset you can still pan - just not across the same range. And that's what I'm seeing with this project: Since the offset is 46% right, you can pan hard right and somewhat left of center, but you can't pan hard left.
 
No fault found.
 
EDIT: Automation, including track inspector and header widget movement is also working normally when read-enabled (with Volume automation raised from -Inf so you can hear it).
 
 

Could there be an offset set in offset mode? Try turning on offset mode and seeing if that's the case?

Ops, looks like I was late to the party.

brundlefly
All works normally for me without cloning anything once the Offset panning is removed. I was going to suggest that last night, but it didn't quite fit with the issue description, because even with an offset you can still pan - just not across the same range. And that's what I'm seeing with this project: Since the offset is 46% right, you can pan hard right and somewhat left of center, but you can't pan hard left.
 
No fault found.
 
EDIT: Automation, including track inspector and header widget movement is also working normally when read-enabled (with Volume automation raised from -Inf so you can hear it).
 
 

Hit the nail on the head. I can confirm the results above. 

Like I said in my post there are lots of complexities to pan and offset mode is one of them :)
You had a track pan set in offset mode. This acts like a second mixer on top of the normal track pan and envelopes.
This is one of the first things to troubleshoot when you have a pan problem like that.