I think this happens when someone starts something like the site deamons or an engine with some user other than ‘hci’.
You would need to shut the site down and logon as ‘root’ and setroot and site to your problem site. Run hcimsiutil -R and remove the affected semaphore files from the site.
Once you have done that start things back up as ‘hci’. It’s been a while but I think this is how I used to get rid of the problem.
