Joe,
I don't see this as an unraid issue. I don't think I am making myself clear. Let me try again.
You have logic in the cache_dirs script to stop caching when 'mover' is running. I don't believe that logic is stopping the caching in my situation. Whenever cache_dirs is running on my setup and the 'mover' script runs, I get the "duplicate object" log entries. I get them at night when 'mover' runs, and I get them also when I execute 'mover' manually.
If I stop cache_dirs (cache_dirs -q), the log entries stop when 'mover' runs.
Is there anything I can do to troubleshoot this?