Has anybody had this problem?  I was working on a project under Platinum and at some stage I noticed none of the effects on the master bus were working.  The bus itself was working, but the limiter, reverb, etc acted as if I had them powered off.  Nothing I did restarted them, including shutting sown Sonar and restarting, or deleting and re-adding the effects.
 
Eventually I defined a new master bus, routed everything to that, and deleted the flaky bus.  Then things were back to normal.
 
Because I didn't notice this immediately when it happened, I am not positive of the cause.  I think what went wrong is this sequence:

1. I wanted to move some of my tracks to a new sub bus.  By mistake, I actually ADDED the sub bus to the existing routing -- in other words, these tracks were then routing both to Master and to the sub-bus.
2. I couldn't figure out how to delete the extra routes, so I instead deleted the sub bus, which removed the extra assignments from the affected tracks.  Then I created a new bus and changed the output of those tracks from Master to the new sub bus.

I suspect that is when my Master bus got hosed -- although it wasn't really even involved in the above steps.
 
This happened under Platinum and it has never happened before.  But I've never done that above sequence, so this could be an old bug.

cparmerlee
 
 
Because I didn't notice this immediately when it happened, I am not positive of the cause.  I think what went wrong is this sequence:

1. I wanted to move some of my tracks to a new sub bus.  By mistake, I actually ADDED the sub bus to the existing routing -- in other words, these tracks were then routing both to Master and to the sub-bus.
2. I couldn't figure out how to delete the extra routes, so I instead deleted the sub bus, which removed the extra assignments from the affected tracks.  Then I created a new bus and changed the output of those tracks from Master to the new sub bus.

I suspect that is when my Master bus got hosed -- although it wasn't really even involved in the above steps.
 
This happened under Platinum and it has never happened before.  But I've never done that above sequence, so this could be an old bug.

How were you routing to two buses?
 
At the bottom of a channel it states which bus is the primary destination of that track it can only go to ONE bus or sound card output not two destinations.
 
You can add sends within a track that will feed other buses.
 
Did you turn off the global Pro Channel power?

There is also a global bypass in the Mix module. 

By any chance did you have those effects in the master bus ProChannel, and switch the ProChannel off by accident? I do this sometimes.

Then there's typing "E" when you didn't have a plug-in set to take all keystrokes...
 
I wouldn't consider it a bug unless it happens again with a standard workflow.

Anderton
I wouldn't consider it a bug unless it happens again with a standard workflow.

I definitely turned off effects globally for the master bus.  I had no idea there was such a control.  I went back to an earlier version of the project and see there is a power button that has become turned off.  I didn't realize that was for the entire Prochannel,  It looks like it ought to apply only to the effects box underneath the button.


 
So that is definitely the problem.  I do think there is a bug because that button got turned off for Main, Metronome, and Preview and I know I didn't hit it 3 times. 

Wookiee
How were you routing to two buses?

Sorry about my confusing terminology.  I had the channel output to Master and I had an additional send to the sub-mix bus.  I intended for the channel output to go to that sub-group instead of master.  But then I couldn't figure out how to remove the unwanted send.  That's when I decided to delete and rebuild the sub-group buses, which did remove the unwanted send.  But I suspect that had the unwanted side-effect of "powering off" all the effects on the master bus.  Now that I know it is just a simple button, it is no big deal, but it does seem there is a little bug in there somewhere.