Circuitworks tab not showing

We just upgraded to SW2011 SP4 from SW2010 and now Circuitworks is broken.

When I enable the CW add-in, the tab does not pop up in the feature tree.  The CW menu shows, as well as the CW tab in the feature manager.  But, a new tab should be created after the "ConfigurationManager" and "DisplayManager" tab.  Anybody else see this?

It was a bit buggy in 2010 too.  Often, you had to toggle on and off the add-in to get it to show up.  But it eventually did show up.

TOM

SolidworksCircuitworks