Joined: 27/03/2008 13:43:16
Location: Cambridge, UK
You can manually remove the hanging SBB using, for example, the findsbbs and removesbb commands in rhino-console.
The getsbbinfo command can be used (before you remove the SBB) to find out why it's hanging. Most likely it's still attached to an activity that has not ended yet. The findactivites, getactivityinfo, and removeactivity commands can be used to manually inspect and clean up those too.