[Solved] Effects died on master bus

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.

There is also a global bypass in the Mix module. 

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.

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.