Been doing a little playing around and noticed something; I can go in and out of the Theater View main menu as many times as I like without getting the error. If during the Theater View session I go anywhere else (i.e. Audio, Images, Video, Playing Now), then I can only do that a finite number of times (4 for some reason).
For instance;
Stage 1
1) CTRL-4 to Theater View, 'Playing Now' is selected, spinning 3D box with Playing Now icon on it
2) CTRL-4 back to standard view
I can do the above as many times as I like, no error.
However;
Stage 2
1) CTRL-4 to Theater View, spinning 3D box with icon on it
2) Select 'Audio', spinning 3D box with Audio icon on it, lots of cover art, etc
3) Select 'Home', back to main menu (Audio is selected)
3) CTRL-4 back to standard view
I can do this 4 times before getting the error. It's always 4 times.
Plus;
1) Do Stage 1 20 times
2) Do Stage 2 twice
3) Do Stage 1 30 times
4) Do Stage 2 once
I can now do stage 1 as many times as I like still, but if I do Stage 2 one more time (thus making it 4 times I've been into Audio) I'll start getting the error when going back into Theater View.