Damn... I'm having the same problem here now. Did you guys solve this?

/M

Sidenote: I have frequent issues with Track Manager when using Folders. Many times, it's as simple as selecting a track in a folder, but not the folder, and you'll get all the tracks in the folder. It's very unpredictable, so I have to check and uncheck Folders and tracks almost every time to get the tracks I want to show up only. It's frustrating, but doesn't surprise me. 

I find that in Console View and selecting 'H' - if I choose to hide or unhide a track or a selection of tracks, it doesn't 'take' first time.

The workaround is to go back into track view, go into Track Manager, don't make any changes, exit Track Manager and go back into Console View, it works as expected then.

And that's a good time to unlock/lock your current screenset.

Wow 2 years, lots of updates but i have the same problem on X2a...

You are not the only one.  I have the same issue X2a

There is still a lot of flakeyness regarding Track Manager/Screensets, on my system
 
Other users are fine with it - it's something really obscure
It always seems as though it doesn't want Console View to have the focus - I must ALWAYS do my track management in Track View before attempting to touch CV and, sometimes when switching to a locked screenset, I don't get the result I was expecting - in fact it's not unusual for ALL tracks & busses to be displayed in the recalled screenset.

Yeah, I'm hoping this thing will be fixed in the next release. It's frustrating, no doubt. I'm concerned that Cakewalk didn't catch this one. The Track Manager is a problem child on all three disparate, but common-type systems I've tested Sonar X2 on. 

After trying PJFARR's suggestion....on songs created in an older version of Sonar that you may have used folders for synths or audio...to remove all synths and audio tracks from any folders and then delete the folder..WORKED FOR ME!  I now am able to go into Console view and go to "STRIPS" TRACK MANAGER" and the Track Manager now shows up and works normally. Sweet!
 
I hope this works for others.